- Singer Building (building, New York City, New York, United States)
construction: Early steel-frame high-rises: The Singer Building (1907) by the architect Ernest Flagg rose to 47 stories (184 meters or 612 feet), Cass Gilbert’s Woolworth Building (1913) attained a height of 238 meters (792 feet) at 55 stories, and Shreve, Lamb & Harmon’s 102-story Empire State Building (1931) touched 381…
- Singer Company (American corporation)
Singer Company, corporation that grew out of the sewing-machine business founded in the United States by Isaac M. Singer. The company was incorporated in 1863 as the Singer Manufacturing Company, taking over the business of I.M. Singer & Company, which had been formed to market the sewing machine
- Singer Manufacturing Company (American corporation)
Singer Company, corporation that grew out of the sewing-machine business founded in the United States by Isaac M. Singer. The company was incorporated in 1863 as the Singer Manufacturing Company, taking over the business of I.M. Singer & Company, which had been formed to market the sewing machine
- Singer, Eric (American musician)
Kiss: Lineup changes and final years: Eric Singer took over on drums, and Tommy Thayer on lead guitar. The lineup of Simmons, Stanley, Singer, and Thayer endured for the next two decades, which were highlighted by concerts played in arenas worldwide. The group’s final tour, the End of the Road World…
- Singer, I.J. (American author)
I.J. Singer was a Polish-born writer of realistic historical novels in Yiddish. Singer’s father was a rabbi who was a fervent Ḥasid, and his mother was from a distinguished Mitnagged family. Singer began writing tales of Ḥasidic life in 1915 and then worked as a newspaper correspondent in Warsaw
- Singer, Isaac (American inventor)
Isaac Singer was an American inventor who developed and brought into general use the first practical domestic sewing machine. At the age of 19 Singer became an apprentice machinist, and in 1839 he patented a rock-drilling machine. Ten years later he patented a metal- and wood-carving machine. While
- Singer, Isaac Bashevis (American author)
Isaac Bashevis Singer was a Polish-born American writer of novels, short stories, and essays in Yiddish. He was the recipient in 1978 of the Nobel Prize for Literature. His fiction, depicting Jewish life in Poland and the United States, is remarkable for its rich blending of irony, wit, and wisdom,
- Singer, Isaac Merritt (American inventor)
Isaac Singer was an American inventor who developed and brought into general use the first practical domestic sewing machine. At the age of 19 Singer became an apprentice machinist, and in 1839 he patented a rock-drilling machine. Ten years later he patented a metal- and wood-carving machine. While
- Singer, Isadore (American mathematician)
Isadore Singer was an American mathematician awarded, together with the British mathematician Sir Michael Francis Atiyah, the 2004 Abel Prize by the Norwegian Academy of Sciences and Letters for “their discovery and proof of the index theorem, bringing together topology, geometry and analysis, and
- Singer, Israel Joshua (American author)
I.J. Singer was a Polish-born writer of realistic historical novels in Yiddish. Singer’s father was a rabbi who was a fervent Ḥasid, and his mother was from a distinguished Mitnagged family. Singer began writing tales of Ḥasidic life in 1915 and then worked as a newspaper correspondent in Warsaw
- Singer, Jerome (American psychologist)
motivation: The Schachter-Singer model: …American psychologists Stanley Schachter and Jerome Singer performed an experiment that suggested to them that elements of both the James-Lange and Cannon-Bard theories are factors in the experience of emotion. Their cognitive-physiological theory of emotion proposed that both bodily changes and a cognitive label are needed to experience emotion completely.…
- Singer, Milton (American anthropologist)
urban culture: Definitions of the city and urban cultures: …of Cities,” Robert Redfield and Milton Singer tried to improve on all previous conceptions of the city, including the one Redfield had himself used in his folk-urban model, by emphasizing the variable cultural roles played by cities in societies. Redfield and Singer delineated two cultural roles for cities that all…
- Singer, Peter (Australian philosopher)
Peter Singer is an Australian ethical and political philosopher best known for his work in bioethics and his role as one of the intellectual founders of the modern animal rights movement. (Read Peter Singer’s Britannica entry on ethics.) Singer’s Jewish parents immigrated to Australia from Vienna
- Singer, Peter Albert David (Australian philosopher)
Peter Singer is an Australian ethical and political philosopher best known for his work in bioethics and his role as one of the intellectual founders of the modern animal rights movement. (Read Peter Singer’s Britannica entry on ethics.) Singer’s Jewish parents immigrated to Australia from Vienna
- Singer, Ronald (South African anthropologist)
Hopefield: Under the direction of Ronald Singer of the University of Cape Town, more than 20,000 faunal remains and 5,000 artifacts were removed from the site. About 50 mammalian species, approximately half of them extinct, are represented among the fossil bones. The extinct species include an ancestral springbok, a sabre-toothed…
- Singer, William Rick
racketeering: Applications of the RICO Act: …of a network created by William (“Rick”) Singer, who pled guilty to racketeering for having accepted money from parents that was used to bribe athletic directors, coaches, and administrators at prestigious colleges and universities—including Yale, Stanford, and Georgetown—to falsify standardized test scores and invent records that portrayed students as outstanding…
- singer-songwriters (music)
singer-songwriters, professional troubadours performing autobiographical songs who ascended in the early 1970s to the forefront of commercial pop in the wake of the communal fervor of 1960s rock. For the baby boom generation that had chosen rock as a medium for political and social discourse, the
- singerie (art)
singerie, type of humorous picture of monkeys fashionably attired and aping human behaviour, painted by a number of French artists in the early 18th century. It originated with the French decorator and designer Jean Berain, who included dressed figures of monkeys in many of his arabesque wall
- Singers, The (work by Frank)
Leonhard Frank: …in Das ochsenfurter Männerquartett (1927; The Singers). During the same period he wrote his masterpiece, Karl und Anna (1926; Carl and Anna), a realistic, if sentimental, account of a soldier who seduces his comrade’s wife.
- Singh Azad, Ram Mohammad (Indian revolutionary)
Udham Singh was an Indian political activist who fought against the British raj in India and sought revenge for the 1919 massacre of civilians by the British army at Jallianwala Bagh in Amritsar in the Punjab province (now Punjab state). Singh assassinated Michael O’Dwyer, who was the
- Singh Bahadur, Banda (Sikh military leader)
Banda Singh Bahadur was the first Sikh military leader to wage an offensive war against the Mughal rulers of India, thereby temporarily extending Sikh territory. As a youth, he decided to be a samana (ascetic), and until 1708, when he became a disciple of Guru Gobind Singh, he was known as Madho
- Singh Bhavnani, Ranveer (Indian actor)
Ranveer Singh is an Indian actor known for his work in Bollywood, noted especially for his on-screen versatility and his spirited, energetic off-screen persona. Some of his standout performances have been in the films Lootera (2013; Robber), Goliyon Ki Raasleela Ram Leela (2013; “The Dance of
- Singh Is Kinng (film by Bazmee [2008])
Akshay Kumar: Rise to stardom: … (2007; “Labyrinth”), and the potboiler Singh Is Kinng (2008). Kumar also hosted three seasons (2008, 2009, and 2011) of Fear Factor: Khatron Ke Khiladi (“Fear Factor: Players of Danger”), a reality TV show based on the American series Fear Factor.
- Singh Sabha (Sikhism)
Singh Sabha, 19th-century movement within Sikhism that began as a defense against the proselytizing activities of Christians and Hindus. Its chief aims were the revival of the teachings of the Sikh Gurus (spiritual leaders), the production of religious literature in Punjabi, and a campaign against
- Singh, Atishi Marlena (Indian social activist and politician)
Atishi is an Indian social activist and politician, best known as one of the top leaders of the Aam Aadmi Party (AAP; “Common Man’s Party”). She served a brief term (September 2024–February 2025) as chief minister of Delhi union territory, replacing AAP founder Arvind Kejriwal. She is the third
- Singh, Atomba (Indian guru)
South Asian arts: The manipuri school: …leading guru of the area, Atomba Singh, to teach at his school in Santiniketan. The supple movements of manipuri dance were suitable for Tagore’s lyrical dramas, and he therefore employed them in his plays and introduced the dance as a part of the curriculum at his institution.
- Singh, Chait (Indian raja)
India: The Company Bahadur: …(demands for money) of Raja Chait Singh of Varanasi and his deposition in 1781 and the pressuring of the Begums of Avadh (the mother and grandmother of the nawab Āṣaf al-Dawlah) for the same reason. Hastings’s financial difficulties at the time were great, but such actions were harsh and high-handed.
- Singh, Charan (prime minister of India)
Charan Singh was an Indian politician who served briefly as prime minister (July 1979–January 1980), representing the Janata Party. He was also the first non-Indian National Congress chief minister (1967–68) of Uttar Pradesh, which sends the highest number of elected representatives to the Lok
- Singh, Chaudhuri Charan (prime minister of India)
Charan Singh was an Indian politician who served briefly as prime minister (July 1979–January 1980), representing the Janata Party. He was also the first non-Indian National Congress chief minister (1967–68) of Uttar Pradesh, which sends the highest number of elected representatives to the Lok
- Singh, Dhulip (Sikh maharaja)
Dalip Singh was the Sikh maharaja of Lahore (1843–49) during his childhood. Dalip was the son of Ranjit Singh, the powerful “Lion of Lahore,” who controlled the Punjab for nearly 50 years. After Ranjit’s death (1839), assassinations and struggles for power prevailed, but the boy’s mother, Rani
- Singh, Giani Zail (president of India)
Zail Singh was an Indian politician who was the first Sikh to serve as president of India (1982–87). The Operation Blue Star—an Indian military operation to root out a group of militant Sikh separatists who had occupied the Golden Temple in Amritsar, Punjab—took place during his presidency. Jarnail
- Singh, Gobind (Sikh Guru)
Guru Gobind Singh was an Indian spiritual leader who is revered as the 10th and last of the human Sikh Gurus, known chiefly for his creation of the Khalsa (Punjabi: “the Pure”), a casteless order of Sikhs that embodies courage and commitment to Sikh ideals. Guru Gobind Singh was born Gobind Rai to
- Singh, Jagmeet (Canadian lawyer and politician)
Tom Mulcair: …to lead the party until Jagmeet Singh was elected as his replacement in October 2017. The following year he resigned as MP.
- Singh, Jarnail (Sikh leader)
Jarnail Singh Bhindranwale was a Sikh religious leader and political revolutionary whose violent campaign for autonomy for a Sikh state in Punjab and armed occupation of the Golden Temple (Harmandir Sahib) complex in Amritsar led to Operation Blue Star, a deadly confrontation with the Indian
- Singh, Jarnail (president of India)
Zail Singh was an Indian politician who was the first Sikh to serve as president of India (1982–87). The Operation Blue Star—an Indian military operation to root out a group of militant Sikh separatists who had occupied the Golden Temple in Amritsar, Punjab—took place during his presidency. Jarnail
- Singh, Jaswant (Indian politician)
Kargil War: Course of the war: …with Indian External Affairs Minister Jaswant Singh failed to produce results. Meetings of military leaders from both countries followed, and in the weeks ahead the international community asserted the need for Pakistan to return to the line of control. Eventually, on July 11, Pakistani Prime Minister Nawaz Sharif announced that…
- Singh, Khushal (Indian writer)
Khushwant Singh was one of the best-known writers of India. He wrote novels such as Train to Pakistan (1956) and I Shall Not Hear the Nightingale (1959), several essays and short stories, and a definitive history of Sikhism in two volumes. Singh won the Padma Bhushan, one of India’s highest
- Singh, Khushwant (Indian writer)
Khushwant Singh was one of the best-known writers of India. He wrote novels such as Train to Pakistan (1956) and I Shall Not Hear the Nightingale (1959), several essays and short stories, and a definitive history of Sikhism in two volumes. Singh won the Padma Bhushan, one of India’s highest
- Singh, Kushal Pal (Indian businessman)
Kushal Pal Singh is an Indian businessman who transformed Delhi Land & Finance Limited (DLF) into one of India’s largest real-estate development firms. After earning a degree in science from Meerut College, Singh studied engineering in the United Kingdom and then served as an officer in an elite
- Singh, Manmohan (prime minister of India)
Manmohan Singh was an Indian economist and politician who served as prime minister of India from 2004 to 2014. A Sikh, he was the first person from a minority community to occupy the office. He was also the first prime minister after Jawaharlal Nehru to return to office after completing a full
- Singh, Milkha (Indian athlete)
Milkha Singh was an Indian track-and-field athlete who became the first Indian man to reach the final of an Olympic athletics event when he placed fourth in the 400-meter race at the 1960 Olympic Games in Rome. Singh’s moniker “the Flying Sikh” came from a comment that the Pakistani president
- Singh, Raghubir (Indian photographer)
Raghubir Singh was an Indian photographer noted for his evocative documentation of the landscape and peoples of India. Educated in art at Hindu College in New Delhi, Singh was self-trained in photography. His own creative work was inspired by Henri Cartier-Bresson’s images of India, which Singh
- Singh, Rajnath (Indian politician)
Rajnath Singh is an Indian politician, government official, and a major figure in the Bharatiya Janata Party (BJP; Indian People’s Party) who has served as minister of defense since 2019. A soft-spoken man who generally kept a low public profile, he became one of the party’s staunchest advocates of
- Singh, Rana Pratap (ruler of Mewar)
Rana Pratap Singh was a Hindu maharaja (1572–97) of the Rajput confederacy of Mewar, now in northwestern India and eastern Pakistan. He successfully resisted efforts of the Mughal emperor Akbar to conquer his area and is honoured as a hero in Rajasthan. The son and successor of the weak Rana Udai
- Singh, Ranveer (Indian actor)
Ranveer Singh is an Indian actor known for his work in Bollywood, noted especially for his on-screen versatility and his spirited, energetic off-screen persona. Some of his standout performances have been in the films Lootera (2013; Robber), Goliyon Ki Raasleela Ram Leela (2013; “The Dance of
- Singh, Shaheed Udham (Indian revolutionary)
Udham Singh was an Indian political activist who fought against the British raj in India and sought revenge for the 1919 massacre of civilians by the British army at Jallianwala Bagh in Amritsar in the Punjab province (now Punjab state). Singh assassinated Michael O’Dwyer, who was the
- Singh, Sher (Indian revolutionary)
Udham Singh was an Indian political activist who fought against the British raj in India and sought revenge for the 1919 massacre of civilians by the British army at Jallianwala Bagh in Amritsar in the Punjab province (now Punjab state). Singh assassinated Michael O’Dwyer, who was the
- Singh, Ude (Indian revolutionary)
Udham Singh was an Indian political activist who fought against the British raj in India and sought revenge for the 1919 massacre of civilians by the British army at Jallianwala Bagh in Amritsar in the Punjab province (now Punjab state). Singh assassinated Michael O’Dwyer, who was the
- Singh, Udham (Indian revolutionary)
Udham Singh was an Indian political activist who fought against the British raj in India and sought revenge for the 1919 massacre of civilians by the British army at Jallianwala Bagh in Amritsar in the Punjab province (now Punjab state). Singh assassinated Michael O’Dwyer, who was the
- Singh, V.P. (prime minister of India)
V.P. Singh was a politician and government official who was prime minister of India in 1989–90. Singh studied at Allahabad and Pune (Poona) universities and became a member of the legislative assembly of his home state of Uttar Pradesh in 1969 as a member of the Indian National Congress (Congress
- Singh, Vijay (Fijian golfer)
golf: U.S. tournaments and players: …Olazabal, Davis Love III, and Vijay Singh.
- Singh, Vishwanath Pratap (prime minister of India)
V.P. Singh was a politician and government official who was prime minister of India in 1989–90. Singh studied at Allahabad and Pune (Poona) universities and became a member of the legislative assembly of his home state of Uttar Pradesh in 1969 as a member of the Indian National Congress (Congress
- Singh, Yuvraj (Indian cricketer)
Yuvraj Singh is a former Indian international cricketer. Nicknamed “Yuvi,” he scored 11,778 runs and took 148 wickets in international cricket—9 in Tests, 111 in One Day Internationals (ODIs), and 28 in Twenty20 Internationals (T20Is). Considered a brilliant all-rounder, he was known for his
- Singh, Zail (president of India)
Zail Singh was an Indian politician who was the first Sikh to serve as president of India (1982–87). The Operation Blue Star—an Indian military operation to root out a group of militant Sikh separatists who had occupied the Golden Temple in Amritsar, Punjab—took place during his presidency. Jarnail
- Singha Durbar (government residence, Nepal)
Kathmandu: …imposing of which is the Singha Palace, once the official residence of the hereditary prime ministers and now housing the government secretariat. About 3 miles (5 km) northeast is the great white dome of Bodhnath, a Buddhist shrine revered by Tibetan Buddhists. The surrounding Kathmandu Valley, noted for its vast…
- Singhalese (people)
Sinhalese, member of a people of Sri Lanka (formerly Ceylon) who constitute the largest ethnic group of that island. In the early 21st century the Sinhalese were estimated to number about 13.8 million, or 73 percent of the population. Their ancestors are believed to have come from northern India,
- Singhalese language
Sinhalese language, Indo-Aryan language, one of the two official languages of Sri Lanka. It was taken there by colonists from northern India about the 5th century bc. Because of its isolation from the other Indo-Aryan tongues of mainland India, Sinhalese developed along independent lines. It was
- Singhalese literature
South Asian arts: Sinhalese literature: 10th century ad to 19th century: The island nation of Ceylon (now called Sri Lanka), formally a part of South Asia, has been little noticed by the subcontinent, apart from the fact that according to an uncertain tradition it is celebrated in the…
- Siṅghana (Indian ruler)
Yadava dynasty: Under Bhillama’s grandson Singhana (reigned c. 1210–47) the dynasty reached its height, as the Yadava campaigned against the Hoysalas in the south, the Kakatiyas in the east, and the Paramaras and Chalukyas in the north.
- Singhara nut (food)
water chestnut: The fruit, sometimes called Singhara nut, is 2.5 to 5 cm (1 to 2 inches) in diameter and usually has four spiny angles. The plant is considered an invasive species in northeastern North America. The ling nut (T. bicornis) is cultivated in most of East Asia.
- Singhasari (historical kingdom, Indonesia)
Singhasari, kingdom based in eastern Java that emerged in the first half of the 13th century after the decline of the kingdom of Kadiri. Singhasari’s first king, Ken Angrok (or Ken Arok), defeated the king of Kadiri, Kertajaya, in 1222. The last king of Singhasari, Kertanagara (reigned 1268–92),
- Singidunum (Roman settlement, Serbia)
Belgrade: …known by the Romans as Singidunum. It was destroyed by the Huns in 442 and changed hands among the Sarmatians, Goths, and Gepidae before it was recaptured by the Byzantine emperor Justinian. It was later held by the Franks and the Bulgars, and in the 11th century became a frontier…
- Singin’ in the Rain (film by Donen and Kelly [1952])
Singin’ in the Rain, American musical comedy film, released in 1952, that was a reunion project for the American in Paris directorial team of Stanley Donen and Gene Kelly, who was also the films’ star. Singin’ in the Rain emerged as a classic, considered by many to be the greatest Hollywood musical
- Singin’ in the Rain (song by Freed and Brown)
Arthur Freed: …movie musical standards as “Singin’ in the Rain,” “Broadway Rhythm,” and “You Are My Lucky Star.”
- Singin’ the Blues (work by Beiderbecke)
Bix Beiderbecke: …as “I’m Coming, Virginia” and “Singin’ the Blues,” both recorded with Trumbauer’s group in 1927, remain jazz classics. Beiderbecke’s approach lived on in the playing of Jimmy McPartland and Bobby Hackett, as well as in that of the many lesser players who formed almost a cult of hero worshipers, possibly…
- singing (music)
singing, the production of musical tones by means of the human voice. In its physical aspect, singing has a well-defined technique that depends on the use of the lungs, which act as an air supply, or bellows; on the larynx, which acts as a reed or vibrator; on the chest and head cavities, which
- singing (animal communication)
birdsong, certain vocalizations of birds, characteristic of males during the breeding season, for the attraction of a mate and for territorial defense. Songs tend to be more complex and longer than birdcalls, used for communication within a species. Songs are the vocalizations of birds most
- Singing a Different Tune
The life forms in tropical forest ecosystems, as in all ecosystems, compete for the resources available. Members of different species may compete for a specific resource (interspecific competition), or members of the same species may compete with one another for a resource (intraspecific
- singing arc (musical instrument)
electronic instrument: Precursors of electronic instruments: …electric means was William Duddell’s singing arc, in which the rate of pulsation of an exposed electric arc was determined by a resonant circuit consisting of an inductor and a capacitor. Demonstrated in London in 1899, Duddell’s instrument was controlled by a keyboard, which enabled the player to change the…
- Singing Brakeman, the (American singer)
Jimmie Rodgers was an American singer, songwriter, and guitarist, one of the principal figures in the emergence of the country and western style of popular music. Rodgers, whose mother died when he was a young boy, was the son of an itinerant railroad gang foreman, and his youth was spent in a
- Singing Cowboy, the (American actor, singer, and entrepreneur)
Gene Autry was an American actor, singer, entrepreneur, one of Hollywood’s premier singing cowboys, and the best-selling country and western recording artist of the 1930s and early ’40s. Autry, who grew up in Texas and Oklahoma, had aspired to be a singer since before he acquired a guitar at the
- Singing Detective, The (teleplay by Potter)
English literature: Drama: …best known for his teleplay The Singing Detective (1986), deployed a wide battery of the medium’s resources, including extravagant fantasy and sequences that sarcastically counterpoint popular music with scenes of brutality, class-based callousness, and sexual rapacity. Potter’s works transmit his revulsion, semireligious in nature, at what he saw as widespread…
- Singing Fool, The (film by Bacon [1928])
Lloyd Bacon: Warner Brothers: Bacon then helmed The Singing Fool (1928), the follow-up to Al Jolson’s The Jazz Singer (1927), which was the first feature-length movie with synchronized dialogue and marked the ascendancy of “talkies.” In Bacon’s production, Jolson again regaled audiences with his singing, and the film was enormously popular.
- singing gallery (architecture)
loft: In churches the rood loft is a display gallery above the rood screen, and a choir or organ loft is a gallery reserved for church singers and musicians. In theatres a loft is the area above and behind the proscenium.
- Singing Leaves, The (work by Peabody)
Josephine Preston Peabody: …tour in 1902 Peabody produced The Singing Leaves (1903), a collection of poems. Her early verse shows the influences of Shakespeare, Robert Browning, and the Pre-Raphaelites, especially Christina Rossetti; it is marked by delicacy, clarity, and a certain otherworldliness. In 1906 Peabody married Lionel S. Marks, a Harvard engineering professor.…
- Singing Nun, The (film by Koster [1966])
Debbie Reynolds: Minnelli’s Goodbye Charlie (1964), The Singing Nun (1966), and Divorce American Style (1967), with Dick Van Dyke. In 1973 she provided the voice of the main character in the animated Charlotte’s Web. In addition to her film work, she also headlined the TV series The Debbie Reynolds Show (1969–70).…
- singing sands (geology)
singing sands, sands that emit audible sounds when in motion. This phenomenon occurs in many parts of the world and has been known for many years. Sound may be produced by a footstep or by the slippage of sand downslope. The sounds emitted may vary with different sands from a roar to a musical
- Singing Sculpture (performance piece by Gilbert & George)
Western painting: Body and performance art: …1969 they performed their famous Singing Sculpture in various European and American locations. Wearing suits, with their faces painted gold, they stood on a table and circled robotically to a recording of Flanagan and Allen’s music-hall song “Underneath the Arches.” By the 1970s and ’80s, however, they had abandoned live…
- Singirok, Jerry (Papuan general)
Papua New Guinea: National politics in the 1990s: Jerry Singirok, rejected the plan, captured the mercenaries, and demanded the resignations of the prime minister, his deputy, Chris Haiveta, and the defense minister, Mathias Ijape. The Australian government voiced strong opposition to both the mercenary plan and Singirok’s methods. The controversy built to a…
- Singitic Gulf (gulf, Greece)
Gulf of Agíou Orous, inlet of the Aegean Sea, northeastern Greece. It is the larger and deeper of two gulfs (the other being Ierisoú Gulf) that extend into the peninsula of the historical region in Greece known as Macedonia (Makedonía). The silted-up remains of a canal completed by Persian king
- single (sports)
baseball: Getting on base: …four kinds of hits: the single, which allows the batter to reach first base; the double, in which the batter reaches second; the triple, which sees the runner reach third base; and the home run, a hit that enables the batter to circle all the bases and score a run.…
- single (phonograph record)
phonograph: …afterward RCA Corporation introduced the 45-RPM disc, which could play for up to 8 minutes per side. These LP’s and “singles” supplanted 78s in the 1950s, and stereophonic (or “stereo”) systems, with two separate channels of information in a single groove, became a commercial reality in 1958. Stereo phonographs capable…
- single bond (chemical bonding)
single bond, type of chemical bond in which two atoms share one pair of electrons, one electron from each atom. It is represented by a single line (―) between the two atoms in structural formulas. Single bonds are the simplest and weakest type of covalent bond, but because they have a lower
- Single Convention on Narcotic Drugs (1961)
drug use: International controls: …the existing treaties, and a Single Convention on Narcotic Drugs was drawn up in New York in 1961. This Convention drew into one comprehensive control regime all the earlier agreements, limited the use of coca leaves and cannabis to medical and scientific needs, and paved the way for the International…
- single crystal (crystallography)
single crystal, any solid object in which an orderly three-dimensional arrangement of the atoms, ions, or molecules is repeated throughout the entire volume. Certain minerals, such as quartz and the gemstones, often occur as single crystals; synthetic single crystals, especially silicon and gallium
- single curved molding (architecture)
molding: Single curved: (1) The cavetto is a concave molding with a profile approximately a quarter-circle, quarter-ellipse, or similar curve. (2) A scotia molding is similar to the cavetto but has a deeper concavity partially receding beyond the face of the general surface that it ornaments.…
- single cut (diamond cutting)
diamond cutting: Faceting: A single cut is a simple form of cutting a round diamond with only 18 facets. Any style of diamond cutting other than the round brilliant or single cuts is called a fancy cut, or fancy shape; important fancy cuts include the marquise, emerald, oval, baguette,…
- Single Electricity Market (Irish company)
Northern Ireland: Resources and power: Indeed, in 2007 the Single Electricity Market (SEM) began operation, providing a single wholesale market for electricity for the whole island of Ireland. The Scotland to Northern Ireland Pipeline (SNIP) transmits natural gas, providing an important industrial and domestic energy source. A gas pipeline completed in 2006 runs from…
- single embryo transfer (medicine)
in vitro fertilization: Ethical issues: The technique of single embryo transfer (SET) is available, though less than 10 percent of women opt for SET because it has a lower rate of success relative to multiple embryo transfer—in many cases at least two cycles of SET are necessary for success. Furthermore, many women are…
- Single European Act (1987)
Single European Act (SEA), agreement enacted by the European Economic Community (EEC; precursor to the European Community and, later, the European Union) that committed its member countries to a timetable for their economic merger and the establishment of a single European currency and common
- single foot (horse gait)
horsemanship: Other gaits: The single foot is similar to the rack. In the pace, the legs on either side move and strike the ground together in a two-beat gait. The fox trot and the amble are four-beat gaits, the latter smoother and gliding.
- Single Integrated Operational Plan (United States warfighting plan)
Single Integrated Operational Plan (SIOP), U.S. strategic war-fighting plan for the use of nuclear weapons that contains the specifics of targeting orders, scheduling, and needed weapons. The first SIOP was approved in late 1960 as an attempt to develop a more systematic approach to the various
- Single Ladies (Put a Ring on It) (song by Beyoncé)
Beyoncé: B’Day, I Am…Sasha Fierce, 4, and Beyoncé: …hits, including the assertive “Single Ladies (Put a Ring on It),” and it contributed to Beyoncé’s dominance of the 2010 Grammy Awards. Her six awards, which included those for song of the year, best female pop vocal performance, and best contemporary R&B album, amounted to the most Grammys collected…
- Single Man, A (film by Ford [2009])
Tom Ford: Films: …and his debut directorial effort, A Single Man, was released in 2009; he also penned the screenplay. The critically acclaimed drama, which was adapted from Christopher Isherwood’s novel, starred Colin Firth as a gay professor who contemplates suicide after his lover’s death. Ford next directed and wrote Nocturnal Animals (2016),…
- Single Man, A (novel by Isherwood)
Christopher Isherwood: A Single Man (1964; film 2009), a brief but highly regarded novel, presents a single day in the life of a lonely middle-aged homosexual. His avowedly autobiographical works include a self-revealing memoir of his parents, Kathleen and Frank (1971); a retrospective biography of himself in…
- single nucleotide polymorphism (genetics)
single nucleotide polymorphism (SNP), variation in a genetic sequence that affects only one of the basic building blocks—adenine (A), guanine (G), thymine (T), or cytosine (C)—in a segment of a DNA molecule and that occurs in more than 1 percent of a population. An example of an SNP is the
- single performance (theater)
theatrical production: The single performance: Single or limited performance of a presentation, as part of institutional or communal life, has been fairly common throughout the history of the theatre. The Greek city-state (polis), the medieval town, the Japanese temple, and the American high school are but a few…
- single photon emission computed tomography (imaging technique)
single photon emission computed tomography (SPECT), imaging technique used in biomedical research and in diagnosis. SPECT is similar to positron emission tomography (PET), in which a compound labeled with a positron-emitting radionuclide is injected into the body; however, its pictures are not as
- single reed (wind instrument part)
wind instrument: Flutes and reeds: The single reed for the clarinet is made from a slip cut from the stem of A. donax. After being trimmed, the reed is flattened on the inner side, while the end of the rounded outer side is scraped down to a feather edge. The thick…
- single standard (monetary system)
money: Standards of value: …bimetallic standard degenerated into a monometallic standard. If, for example, the quantity of silver designated as the monetary equivalent of 1 ounce of gold (15 to 1) was less than the quantity that could be purchased in the market for 1 ounce of gold (say 16 to 1), no one…