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

Recent Examples on the Web
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In addition, the connection between diabetes and dementia was similar across men, women, and racial and ethnic subgroups, suggesting that the link appears to be consistent in different populations. Tom Gavin, EverydayHealth.com, 19 Mar. 2026 The data showed that semaglutide reduced the progression of kidney disease by 22 percent across all subgroups of people enrolled. Tara Haelle, Scientific American, 17 Mar. 2026 At that time, 115 to 130 million years ago, spinosaurids had split into two subgroups – baryonychines and spinosaurines – that collectively dominated the Tethyan realm as the largest predators of the day. Paul C. Sereno, The Conversation, 16 Mar. 2026 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 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 30 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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