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

Example Sentences

For example, different subgroups of meningococcal meningitis dominate in Europe than in the U.S.,

From The Wall Street Journal

There are many questions these AZA matchmakers ask themselves before making breeding recommendations, and they extend beyond genetic and personality compatibility: Will these animals be able to create subgroups?

From Los Angeles Times

However, when they focused on specific subgroups, they observed small but statistically significant improvements among people who had lower diet quality and normal BP at the start of the study.

From Science Daily

The subgroup of panel members that recommended the change also said it understood that “the safety concern may be more theoretical than real.”

From The Wall Street Journal

A new study by Bank of America shows subgroups of AI stocks moving independently to a degree.

From Barron's