[ groo-ping ]
/ ˈgru pɪŋ /


an act or process of placing in groups.
a set or arrangement of persons or things in a group.

Origin of grouping

1740–50; See group, -ing1, -ing2

Definition for grouping (2 of 2)

[ groop ]
/ grup /


verb (used with object)

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

verb (used without object)

to form a group.
to be part of a group.

Origin of group

1665–75; < French groupe < Italian gruppoGermanic


group·wise, adverbsu·per·group, nounun·grouped, adjective

usage note for group

1, 2. See collective noun. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for grouping

British Dictionary definitions for grouping (1 of 2)

/ (ˈɡruːpɪŋ) /


a planned arrangement of things, people, etc, within a group

British Dictionary definitions for grouping (2 of 2)

/ (ɡruːp) /



to arrange or place (things, people, etc) in or into a group or (of things, etc) to form into a group

Word Origin for group

C17: from French groupe, of Germanic origin; compare Italian gruppo; see crop
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for grouping

[ grōōp ]


An assemblage of persons or objects gathered or located together; an aggregation.
A class or collection of related objects or entities.
Two or more atoms that behave or that are regarded as behaving as a single chemical unit.


To place or arrange in a group.
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.

Scientific definitions for grouping

[ grōōp ]

  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.
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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.