WordReference Random House Learner's Dictionary of American English © 2019
group /grup/USA pronunciation   n. [countable]
  1. any collection or assembly of persons or things, considered together as being related in some way:a group of students.
  2. a number of musicians who play together:a rock group.

  1. to (cause to) place or form together in a group: [+ object]We grouped the students by age.[+ object + into]grouped the errors into several types.[no object]The workers and their families grouped together to protest.

WordReference Random House Unabridged Dictionary of American English © 2019
group  (gro̅o̅p),USA pronunciation n. 
  1. any collection or assemblage of persons or things;
    aggregation:a group of protesters; a remarkable group of paintings.
  2. a number of persons or things ranged or considered together as being related in some way.
  3. ChemistryAlso called  radical. two or more atoms specifically arranged, as the hydroxyl group, –OH. Cf. free radical.
  4. Linguistics
    • (in the classification of related languages within a family) a category of a lower order than a subbranch and of a higher order than a subgroup:the Low German group of West Germanic languages.
    • any grouping of languages, whether it is made on the basis of geography, genetic relationship, or something else.
  5. Geologya division of stratified rocks comprising two or more formations.
  6. Military
    • Military[Army.]a flexible administrative and tactical unit consisting of two or more battalions and a headquarters.
    • Air Force. an administrative and operational unit subordinate to a wing, usually composed of two or more squadrons.
  7. Music and Dancea section of an orchestra comprising the instruments of the same class.
  8. Fine Art[Art.]a number of figures or objects shown in an arrangement together.
  9. Mathematicsan algebraic system that is closed under an associative operation, as multiplication or addition, and in which there is an identity element that, on operating on another element, leaves the second element unchanged, and in which each element has corresponding to it a unique element that, on operating on the first, results in the identity element.
  10. Oceanography, British Terms, Grammar[Gram. Chiefly Brit.]a phrase:nominal group; verbal group.

  1. to place or associate together in a group, as with others.
  2. to arrange in or form into a group or groups.

  1. to form a group.
  2. to be part of a group.
groupwise′, adv. 
  • Italian gruppo Gmc
  • French groupe
  • 1665–75
    • 12.See corresponding entry in Unabridged order, organize, classify, combine.
    1, 2. See  collective noun. 

Collins Concise English Dictionary © HarperCollins Publishers::

group /ɡruːp/ n
  1. a number of persons or things considered as a collective unit
  2. a number of persons bound together by common social standards, interests, etc
  3. (as modifier): group behaviour
  4. a small band of players or singers, esp of pop music
  5. a number of animals or plants considered as a unit because of common characteristics, habits, etc
  6. an association of companies under a single ownership and control, consisting of a holding company, subsidiary companies, and sometimes associated companies
  7. two or more figures or objects forming a design or unit in a design, in a painting or sculpture
  8. a military formation comprising complementary arms and services, usually for a purpose: a brigade group
  9. an air force organization of higher level than a squadron

  10. Also called: radical two or more atoms that are bound together in a molecule and behave as a single unit: a methyl group -CH3
  11. a vertical column of elements in the periodic table that all have similar electronic structures, properties, and valencies
  12. a set that has an associated operation that combines any two members of the set to give another member and that also contains an identity element and an inverse for each element
  13. See blood group
  1. to arrange or place (things, people, etc) in or into a group or (of things, etc) to form into a group
Etymology: 17th Century: from French groupe, of Germanic origin; compare Italian gruppo; see crop

'group' also found in these entries:
Collocations: group [people, students, workers] into, a [student, corporate, discussion, publishing] group, the group leader, more...

Forum discussions with the word(s) "group" in the title:

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