group

A number of things or persons being in some relation to one another.

“there is a group of houses behind the hill; he left town to join a Communist group”

“A group of people gathered in front of the Parliament to demonstrate against the Prime Minister's proposals.”

group theoryA set with an associative binary operation, under which there exists an identity element, and such that each element has an inverse.

A (usually small) group of people who perform music together.

“Did you see the new jazz group?”

astronomyA small number (up to about fifty) of galaxies that are near each other.

chemistryA column in the periodic table of chemical elements.

chemistryA functional group.

“Nitro is an electron-withdrawing group.”

sociologyA subset of a culture or of a society.

militaryAn air force formation.

geologyA collection of formations or rock strata.

computingA number of users with the same rights with respect to accession, modification, and execution of files, computers and peripherals.

An element of an espresso machine from which hot water pours into the portafilter.

musicA number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes.

sportsA set of teams playing each other in the same division, while not during the same period playing any teams that belong to other sets in the division.

businessA commercial organization.

To put together to form a group.

“group the dogs by hair colour”

To come together to form a group.

Arrange into a group or groups

“Can you group these shapes together?”