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group

 - 6 dictionary results

group

  [groop]
Use group in a Sentence
–noun
1. any collection or assemblage of persons or things; cluster; 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. Also called radical. Chemistry. two or more atoms specifically arranged, as the hydroxyl group, –OH. Compare free radical.
4. Linguistics.
a. (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.
b. any grouping of languages, whether it is made on the basis of geography, genetic relationship, or something else.
5. Geology. a division of stratified rocks comprising two or more formations.
6. Military.
a. Army. a flexible administrative and tactical unit consisting of two or more battalions and a headquarters.
b. Air Force. an administrative and operational unit subordinate to a wing, usually composed of two or more squadrons.
7. Music. a section of an orchestra comprising the instruments of the same class.
8. Art. a number of figures or objects shown in an arrangement together.
9. Mathematics. an 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. Grammar (chiefly British). a phrase: nominal group; verbal group.
–verb (used with object)
11. to place or associate together in a group, as with others.
12. to arrange in or form into a group or groups.
–verb (used without object)
13. to form a group.
14. to be part of a group.
Origin:
1665–75; < F groupe < It gruppo ≪ Gmc

Related forms:
groupwise, adverb

Synonyms:
12. order, organize, classify, combine.

Usage note:
1, 2. See collective noun.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To group
group   (grōōp)   
n.  

  1. An assemblage of persons or objects gathered or located together; an aggregation: a group of dinner guests; a group of buildings near the road.

  2. Two or more figures that make up a unit or design, as in sculpture.

  3. A number of individuals or things considered together because of similarities: a small group of supporters across the country.

  4. Linguistics A category of related languages that is less inclusive than a family.

    1. A military unit consisting of two or more battalions and a headquarters.

    2. A unit of two or more squadrons in the U.S. Air Force, smaller than a wing.

    3. Two or more atoms behaving or regarded as behaving as a single chemical unit.

    4. A column in the periodic table of the elements.

    5. A stratigraphic unit, especially a unit consisting of two or more formations deposited during a single geologic era.

  6. A class or collection of related objects or entities, as:

    1. Two or more atoms behaving or regarded as behaving as a single chemical unit.

    2. A column in the periodic table of the elements.

    3. A stratigraphic unit, especially a unit consisting of two or more formations deposited during a single geologic era.

  7. Mathematics A set with a binary associative operation such that the operation admits an identity element and each element of the set has an inverse element for the operation.

adj.  Of, relating to, constituting, or being a member of a group: a group discussion; a group effort.
v.   grouped, group·ing, groups

v.   tr.
To place or arrange in a group: grouped the children according to height.
v.   intr.
To belong to or form a group: The soldiers began to group on the hillside.

[French groupe, from Italian gruppo, probably of Germanic origin.]
Usage Note: Group as a collective noun can be followed by a singular or plural verb. It takes a singular verb when the persons or things that make up the group are considered collectively: The dance group is ready for rehearsal. Group takes a plural verb when the persons or things that constitute it are considered individually: The group were divided in their sympathies. See Usage Note at collective noun.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: group
Pronunciation: 'grüp
Function: noun
often attributive 1 : a number of individuals assembled together or having someunifying relationship
2 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) : an assemblage of atoms forming part of a molecule; especially : FUNCTIONAL GROUP(2) : an assemblage of elements forming one of the vertical columns of the periodic table
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

group (gr&oomacr;p)
n.

  1. An assemblage of persons or objects gathered or located together; an aggregation.

  2. A class or collection of related objects or entities.

  3. Two or more atoms that behave or that are regarded as behaving as a single chemical unit.

v. grouped, group·ing, groups

  1. To place or arrange in a group.

  2. To belong to or form a group.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
group   (grp)  Pronunciation Key 

  1. Chemistry

    1. Two or more atoms that are bound together and act as a unit in a number of chemical compounds, such as a hydroxyl (OH) group.

    2. In the Periodic Table, a vertical column that contains elements having the same number of electrons in the outermost shell of their atoms. Elements in the same group have similar chemical properties. See Periodic Table.

  2. Mathematics A set with an operation whose domain is all ordered pairs of members of the set, such that the operation is binary (operates on two elements) and associative, the set contains the identity element of the operation, and each element of the set has an inverse element for the operation. The positive and negative integers and zero form a set that is a group under the operation of ordinary addition, since zero is the identity element of addition and the negative of each integer is its inverse. Groups are used extensively in quantum physics and chemistry to model phenomena involving symmetry and invariance.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

group
A group G is a non-empty set upon which a binary operator * is defined with the following properties for all a,b,c in G:
Closure: G is closed under *, a*b in G Associative: * is associative on G, (a*b)*c = a*(b*c) Identity: There is an identity element e such that a*e = e*a = a. Inverse: Every element has a unique inverse a' such that a * a' = a' * a = e. The inverse is usually written with a superscript -1.
(1998-10-03)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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