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group definition

group (gro̵̅o̅p)

noun

  1. a number of persons or things gathered closely together and forming a recognizable unit; cluster; aggregation; band a group of houses
  2. a collection of objects or figures forming a design or part of a design, as in a work of art
  3. a number of persons or things classified together because of common characteristics, community of interests, etc.
  4. Chem.
    1. a unit consisting of two or more joined atoms within a molecule; esp., a radical ()
    2. a number of elements with similar properties, forming one of the vertical columns of the periodic table
    3. a number of elements having similar chemical reactions
  5. Geol. a stratigraphic unit consisting of two or more formations
  6. Math. a closed set of elements having an associative binary operation (usually multiplication), an identity element (I × a = a × I = a), and an inverse element for each element (a × 1/a = 1/a × a = I)
  7. ☆ a military aircraft unit; specif., in the U.S. Air Force, a subdivision of a wing, composed of two or more squadrons
  8. U.S. Mil. a unit made up of two or more battalions or squadrons

Etymology: Fr groupe < It gruppo, a knot, lump, group < Gmc *kruppa, round mass: see crop

transitive verb, intransitive verb

to assemble or form into a group or groups

adjective

of, characteristic of, or involving a group group attitudes

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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