Si
SI is the International System of Units. SI, Si, or si may also refer to: Arts, entertainment, and media Literature Si (novel), a 2014 novel by Bob Ong Sí (Peruvian magazine), a magazine notable for its anti-corruption reporting Skeptical Inquirer, an American magazine covering topics on science and skepticism Sports Illustrated, an American sports magazine Music Sí (Julieta Venegas album), released in 2003 Sì (Andrea Bocelli album), released in 2018 "Sí" (Martin Jensen song), a 2015 song Si (musical note), the seventh note in the traditional fixed do solfège Sì (operetta), an operetta by the Italian composer Pietro Mascagni "Sì" (Gigliola Cinquetti song), the Italian entry to the Eurovision Song Contest 1974 Si (Zaz song), 2013 Sí, a 2013 Spanish album by Malú "Sì", a 1985 song released by Italian actress Carmen Russo Other uses in arts, entertainment, and media Si (film), original title of the 2010 South Korean film Poetry Enterprises and organisations Computing Swiss Informatics Society, a Swiss organization of computer science educators, researchers, and professionals The SI, a former name of the American defense contractor Vencore Education St. Ignatius College Preparatory, a Jesuit high school in San Francisco, California, US Silay Institute, a private college in the Philippines Government Si, a South Korean administrative unit Survey of India, an Indian government agency responsible for managing geographical information Swedish Institute (Svenska institutet), a Swedish government agency which promotes Sweden abroad Politics Sarekat Islam, a socio-political organization in Indonesia under Dutch colonial rule Catalan Solidarity for Independence, a Catalan political party Situationist International, an organization of social revolutionaries Socialist International, a worldwide organization of political parties Solidarity and Equality, an Argentine political party (Spanish: Solidaridad e Igualdad) Transportation Blue Islands (IATA airline code, SI) Skynet Airlines (IATA airline code SI, ceased operating 2004) Spokane International Railroad (reporting mark SI), a former railway in Washington, US Other enterprises and organizations Samahang Ilokano, a fraternity/sorority based in the Philippines SÍ Sørvágur, a Faroese sports association Society of Indexers, a professional society based in the UK Sports Interactive, a British computer games development company People with the name Si (surname), a Chinese surname Si (given name) Places Mount Si, a mountain in the U.S. state of Washington Province of Siena (postal code and vehicle registration plate code) Si County, Anhui, China Si River, in China Slovenia's ISO 3166-2 code Science and technology Biology and healthcare Sacroiliac, an anatomical abbreviation for the sacroiliac (joint) Self-injury, intentional, direct injuring Shock index, a measurement used to determine if a person is suffering shock Chemistry si, a chemical descriptor; See prochirality Silicon, symbol Si, a chemical element Disulfur diiodide, empirical formula SI Computing and Internet .si, the Internet country code top-level domain for Slovenia Shift In, an ASCII control character SI register, or source index, in X86 computer architecture Swarm intelligence, an artificial intelligence technique Synthetic intelligence, an alternate term for or a form of artificial intelligence Motor vehicles Honda Civic Si, an automobile Spark-ignition engine, a type of internal combustion engine Other uses in science