group

== English == === Alternative forms === groop (obsolete), groupe (obsolete) === Etymology === From French groupe (“cluster, group”), from Italian gruppo, groppo (“a knot, heap, group, bag (of money)”). In the "group theory" sense, calqued from French groupe, a term coined by the young French mathematician Évariste Galois in 1830. Cognate with German Kropf (“crop, craw, bunch”); Old English cropp, croppa (“cluster, bunch, sprout, flower, berry, ear of corn, crop”) (whence English crop); Dutch krop (“craw”), Icelandic kroppr (“hump, bunch”). Doublet of crop and croup. === Pronunciation === enPR: gro͞op: (Received Pronunciation) IPA(key): /ɡɹuːp/ (General American) IPA(key): /ɡɹup/ (Scotland, Northern Ireland) IPA(key): /ɡɹʉp/ Rhymes: -uːp === Noun === group (plural groups) A number of things or persons being in some relation to one another. (group theory) A set with an associative binary operation, under which there exists an identity element, and such that each element has an inverse. 2007, Zhong-Qi Ma, Group Theory for Physicists, World Scientific, page 277, In Chap. 4 the fundamental concepts on Lie groups have been introduced through the SO(3) group and its covering group SU(2). (geometry, archaic) An effective divisor on a curve. A (usually small) group of people who perform music together. (astronomy) A small number (up to about fifty) of galaxies that are near each other. (chemistry) A column in the periodic table of chemical elements. Coordinate term: period (chemistry) A functional group. (sociology) A subset of a culture or of a society. (military) An air force formation. (geology) A collection of formations or rock strata. (computing) A number of users with the same rights with respect to accession, modification, and execution of files, computers and peripherals. An element of an espresso machine from which hot water pours into the portafilter. (music) A number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes. (sports) A set of teams playing each other in the same division, while not during the same period playing any teams that belong to other sets in the division. (business) A commercial organization. (uncountable) Group therapy. ==== Synonyms ==== (number of things or persons being in some relation to each other): collection, set (people who perform music together): band, ensemble See also Thesaurus:group ==== Hypernyms ==== (in group theory): monoid ==== Hyponyms ==== ==== Derived terms ==== ==== Descendants ==== ==== Translations ==== ==== References ==== group on Wikipedia.Wikipedia === Verb === group (third-person singular simple present groups, present participle grouping, simple past and past participle grouped) (transitive) To put together to form a group. (intransitive) To come together to form a group. ==== Synonyms ==== (put together to form a group): amass, categorise/categorize, classify, collect, collect up, gather, gather together, gather up; see also Thesaurus:round up (come together to form a group): assemble, begather, foregather, throng; see also Thesaurus:assemble ==== Derived terms ==== groupable ==== Translations ==== === Further reading === “group”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “group”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC. == Chinese == === Etymology === From English group. Doublet of 谷. === Pronunciation === === Noun === group (Hong Kong Cantonese) group of people or objects (Classifier: 個／个 c) (social media) group === Classifier === group (Hong Kong Cantonese) Classifier for groups of people or objects..