subset

noun

sub·​set ˈsəb-ˌset How to pronounce subset (audio)
1
: a set each of whose elements is an element of an inclusive set
2
: division, portion
a subset of our community

Examples of subset in a Sentence

The set {1,2,3} is a subset of the set {1,2,3,4,5}. Only a small subset of the patients in the study experienced these side effects.
Recent Examples on the Web
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Similarly, the Apple Watch is a convenient way to tap into a tiny subset of your iPhone’s communication capabilities (plus fitness tracking). ArsTechnica, 24 Apr. 2026 What the bill would do At its core, the bill extends limited counter-unmanned aircraft system — or counter-UAS — authority beyond only federal agencies and some state and local law enforcement to include a subset of private infrastructure operators, under federal oversight. Nicole Sganga, CBS News, 23 Apr. 2026 Weingart and Kim each noted that Weinstein’s trial lawyers had not objected to the exclusion of a subset of the messages, which would foreclose him from raising the issue on appeal. Gene Maddaus, Variety, 23 Apr. 2026 Even within the very small subset of top-tier pop acts, Jackson is separate from songwriters like Taylor Swift and Bruce Springsteen, who channel fans’ inner emotions through their own voices. Amy Nicholson, Los Angeles Times, 22 Apr. 2026 See All Example Sentences for subset

Word History

First Known Use

1881, in the meaning defined at sense 1

Time Traveler
The first known use of subset was in 1881

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Cite this Entry

“Subset.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subset. Accessed 30 Apr. 2026.

Kids Definition

subset

noun
sub·​set ˈsəb-ˌset How to pronounce subset (audio)
: a mathematical set that is a part of another mathematical set
the set of even numbers is a subset of the set of all numbers

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