subgroup

American  

[suhb-groop] / ˈsʌbˌgrup /

noun

1. a subordinate group; a division of a group.

2. Chemistry. a division of a group in the periodic table.

3. Mathematics. a subset of a group that is closed under the group operation and in which every element has an inverse in the subset.

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subgroup British  

/ ˈsʌbˌɡruːp /

noun

1. a distinct and often subordinate division of a group

2. a mathematical group whose members are members of another group, both groups being subject to the same rule of combination

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Etymology

Origin of subgroup

First recorded in 1835–45; sub- + group

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Example Sentences

See Examples For:

subgroup

The original subgroup included 41 participants, with 23 assigned to CBL-514 and 18 to placebo.

From Science Daily ● Oct. 11, 2026

Tozorakimab also achieved better data for the subgroup of patients for which Sanofi and Regeneron’s Dupixent and GSK’s Nucala are approved, they add.

From The Wall Street Journal ● Sep. 10, 2026

Goldman, however, is not on the list of primary dealers, or a subgroup of dealers that are allowed to bid on up to 25% of auctioned amounts.

From The Wall Street Journal ● May 14, 2026

The research paid special attention to people with high blood pressure and also examined a subgroup of adults considered safe candidates for salt substitutes.

From Science Daily ● Mar. 31, 2026

However, Greenberg recognized that all Niger-Congo languages of subequatorial Africa belong to a single language subgroup termed Bantu.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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