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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But quality is a subset of excellence. Chip Bell, Forbes.com, 14 Sep. 2025 Red Hood is the moniker of Jason Todd, who exists within the Gotham City-Batman subset of DC characters. Dan Heching, CNN Money, 12 Sep. 2025 Given that Apple shipped about 18 million sets of wireless headphones in the first quarter alone, according to Canalys, the company's entry into the market will expose a wider subset of customers to improvements translation tech has made in recent years. Kif Leswing, CNBC, 12 Sep. 2025 Southwest’s planes don’t offer power outlets and only a subset of them include USB ports. PC Magazine, 9 Sep. 2025 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 16 Sep. 2025.

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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