group

Definition from Wiktionary, a free dictionary

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Group

Wikipedia

[edit] English

[edit] Alternative spellings

• groupe (obsolete)

[edit] Pronunciation

•  Audio (US)^{help, file}
• IPA: /gɹuːp/
• Rhymes: -uːp

[edit] Etymology

From French groupe "cluster, group" from Italian gruppo "knot, group", of Germanic origin, from Proto-Germanic *kruppaz (“‘lump, round mass’”). Akin to Old English cropp "craw, top, bunch", Dutch krop "craw", German Kropf "crop, craw, bunch", Icelandic kroppr "hump, bunch"

[edit] Noun

group (plural groups)

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

   There is a group of houses behind the hill.

   A group of people gathered in front of the Parliament to demonstrate against the Prime Minister's proposals.

   He left town to join a Communist group

2. (group theory) A set with an associative binary operation, under which there exists an identity element, and such that each element has an inverse.
3. A (usually small) group of people who perform music together.

   Did you see the new jazz group?

4. (astronomy) A small number (up to about fifty) of galaxies that are near each other.
5. (chemistry) A column in the periodic table of chemical elements.
6. (chemistry) A functional entity consisting of certain atoms whose presence provides a certain property to a molecule, such as the methyl group.
7. (sociology) A subset of a culture or of a society.
8. (military) An air force formation.
9. (geology) A collection of formations or rock strata.
10. (computing) In the Unix operating system, a number of users with same rights with respect to accession, modification, and execution of files, computers and peripherals.
11. (coffee) An element of an espresso machine from which hot water pours into the portafilter.

[edit] Synonyms

• (number of things or persons being in some relation to each other): collection, set
• (people who perform music together): band, ensemble
• See also Wikisaurus:group

[edit] Derived terms

[edit] Translations

[edit] Verb

to group (third-person singular simple present groups, present participle grouping, simple past and past participle grouped)

1. (transitive) To put together to form a group.

[edit] Synonyms

• (put together to form a group): amass, categorise/categorize, classify, collect, collect up, gather, gather together, gather up

[edit] Translations

[edit] External links

• group in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• group in The Century Dictionary, The Century Co., New York, 1911