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.
Instead, the authors ran an analysis on a subset of the group after the first five years to see whether their diets had changed. Sandee Lamotte, CNN Money, 18 Dec. 2025 Despite the rough career start and regular criticism by the media, Sanders has earned the favor of a subset of Pro Bowl voters. Jackson Thompson, FOXNews.com, 16 Dec. 2025 Under Par’s old leadership, that company’s own premium brand, Showtime, has been all but destroyed, leaving Paramount+ desperately in need of the kind of upscale content that gets a certain subset of subscribers to shell out for a higher tier. Josef Adalian, Vulture, 11 Dec. 2025 But there is a subset of outdoor athletes who seem to have found the genetic safety switch in their mitochondria and turned it off—folks like ski alpinist Christina Lustenberger. Outside Online, 10 Dec. 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 26 Dec. 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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