group

Main Entry:: ¹group
Pronunciation:: \ˈgrüp\
Function:: noun
Usage:: often attributive
Etymology:: French groupe, from Italian gruppo, by-form of groppo knot, tangle, of Germanic origin; akin to Old High German kropf craw — more at crop
Date:: 1686

1: two or more figures forming a complete unit in a composition2 a: a number of individuals assembled together or having some unifying relationship b: an assemblage of objects regarded as a unit c (1): a military unit consisting of a headquarters and attached battalions (2): a unit of the United States Air Force higher than a squadron and lower than a wing3 a: an assemblage of related organisms —often used to avoid taxonomic connotations when the kind or degree of relationship is not clearly defined b (1): two or more atoms joined together or sometimes a single atom forming part of a molecule ; especially : functional group <a methyl group> (2): an assemblage of elements forming one of the vertical columns of the periodic table c: a stratigraphic division comprising rocks deposited during an era4: a mathematical set that is closed under a binary associative operation, contains an identity element, and has an inverse for every element

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