subgroup

[suhb-groop]

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.

subgroup

/ 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

Word History and Origins

Origin of subgroup¹

First recorded in 1835–45; sub- + group

Example Sentences

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

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

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Another challenge lies in data collection - castes have many subgroups, raising questions about the right level of classification.

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Helen Tager-Flusberg, director of the Center for Autism Research Excellence at Boston University, says the difficulty with clinically defining subgroups is that “human nature and human brain disorders don’t always cut at neatly defined boundaries.”

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Planned studies also include larger, pragmatic trials to evaluate outcomes in specific subgroups and health-economic analyses comparing low-dose radiation with injections and medication regimens.

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