group

plural groups · alternative groop · alternative groupe

1. collectiveA number of things or persons being in some relation to one another.

   there is a group of houses behind the hill; he left town to join a Communist group

   3 more examples

   Then everybody once more knelt, and soon the blessing was pronounced. The choir and the clergy trooped out slowly, […], down the nave to the western door. […] At a seemingly immense distance the surpliced group stopped to say the last prayer.

   1918, W[illiam] B[abington] Maxwell, chapter V, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company, →OCLC

   Imagine a country where children do nothing but play until they start compulsory schooling at age seven. Then, without exception, they attend comprehensives until the age of 16. Charging school fees is illegal, and so is sorting pupils into ability groups by streaming or setting.

   2013 July 19, Peter Wilby, “Finland spreads word on schools”, in The Guardian Weekly, volume 189, number 6, page 30

   A group of people is/are gathering in front of the Parliament to demonstrate against the Prime Minister's proposals.

   Synonyms: collection, set

2. group theoryA 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).

   2 more examples

   Throughout this section, we shall assume the existence of finitely presented groups with unsolvable word problem.

   1977, Roger C. Lyndon, Paul E. Schupp, Combinatorial Group Theory, Springer, page 192

   In this chapter we give some examples of Fuchsian groups. The most interesting and important ones are the so-called "arithmetic" Fuchsian groups, i.e., discrete subgroups of PSL(2,R) obtained by some "arithmetic" operations. One such construction we have already seen: if we choose all matrices of SL(2,R) with integer coefficients, then the corresponding elements of PSL(2,R) form the modular group PSL(2,Z).

   1992, Svetlana Katok, Fuchsian Groups, University of Chicago Press, page 112

3. archaicgeometryAn effective divisor on a curve.
4. A (usually small) group of people who perform music together.

   Did you see the new jazz group?

   Synonyms: band, ensemble

5. astronomyA small number (up to about fifty) of galaxies that are near each other.
6. chemistryA column in the periodic table of chemical elements.
7. chemistryA functional group.

   Nitro is an electron-withdrawing group.

8. human sciencesA subset of a culture or of a society.
9. governmentAn air force formation.
10. geographyA collection of formations or rock strata.
11. computingA number of users with the same rights with respect to accession, modification, and execution of files, computers and peripherals.
12. An element of an espresso machine from which hot water pours into the portafilter.
13. entertainmentA number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes.
14. hobbiesA 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.

    It is the third of eight matches that Spain will play in Group I, but the coach Vicente del Bosque has described it as being more akin to the first leg of a cup semi-final.

    2012 October 15, Sid Lowe, “Spain aim to take 'very big step' towards 2014 World Cup against France”, in The Guardian

15. businessA commercial organization.
16. uncountableGroup therapy.

    Aside from occasional moments of belligerence, he was a pretty affable guy. I rather liked him and, I guess, wanted him to like me. But his affability also included the odd "faggot" joke, which left me dubious over talking with him about being gay, even in "group."

    1986, Samuel R. Delany, Joseph Beam, “The Possibility of Possibilities”, in Joseph Beam, editor, In The Life: A Black Gay Anthology, page 194

present singular third person groups · participle present grouping · participle past grouped · past grouped · alternative groop · alternative groupe

1. transitiveTo put together to form a group.

   group the dogs by hair colour

   Synonyms: amass

2. intransitiveTo come together to form a group.

   For many people forming pods last year, finding compatible people to group with was not a cost but a goal.

   2021 October 1, Calder Katyal, “Schools Need to Undo the Damage of Pods”, in The Atlantic

   Synonyms: assemble

3. transitivehobbiesTo eliminate in the group stage of a competition.

   Clubs like Real Sociedad are getting grouped in the Europa League. Even clubs like Atletico Madrid and Villareal are finding it hard to progress to the R16 in the UCL.

   2022 April 5, leocic (@leocitic), “leocic on Twitter”, in Twitter