subgroup

noun

sub·​group ˈsəb-ˌgrüp How to pronounce subgroup (audio)
Synonyms of subgroupnext
1
: a subordinate group whose members usually share some common differential quality
2
: a subset of a mathematical group that is itself a group

Examples of subgroup in a Sentence

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Though the exact species remains unidentified, researchers believe these eggs are from the Notosuchia subgroup, as the Bauru Group holds a large collection of these fossils. Maria Mocerino, Interesting Engineering, 7 Mar. 2026 The residents of 3rd Street between Fifth and Sixth Avenues in Park Slope now have a blockwide WhatsApp group that consists of 156 members from eight subgroups in a combo of rental buildings, condos, co-ops, and single- and multi-family brownstones. Sara Lieberman, Curbed, 4 Mar. 2026 The error margins are larger among partisan subgroup samples and other subgroups. Emily Guskin, ABC News, 27 Feb. 2026 District data show double-digit gains across all student subgroups, including a 135% increase in exam participation among students with disabilities since 2020-2021. Teresa Liu, Daily News, 25 Feb. 2026 See All Example Sentences for subgroup

Word History

First Known Use

1826, in the meaning defined at sense 1

Time Traveler
The first known use of subgroup was in 1826

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Cite this Entry

“Subgroup.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subgroup. Accessed 10 Mar. 2026.

Kids Definition

subgroup

noun
sub·​group ˈsəb-ˌgrüp How to pronounce subgroup (audio)
: a group whose members usually share some common quality that makes them different from the other members of a larger group to which they belong

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