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definition of the word group

by the Wiktionnary

From French groupe.



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.

Definition from Wiktionary
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