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.
Further afield for growers, there’s potential to use Machine Learning—one of four subsets of AI—to assist with grape yields, harvest projections and other viticultural activities. Lana Bortolot, Forbes, 27 Feb. 2025 Herbst noted that the Daytona 500 tends to draw more casual viewers than any other racing broadcast during the season, with a subset of viewers who come in for the last 50-60 laps of the race. Jason Clinkscales, Sportico.com, 19 Feb. 2025 The trial was a longer follow-up to an initial 2023 trial that first tested the efficacy of the vaccines in a subset of people with pancreatic cancer. Kaitlin Sullivan, NBC News, 19 Feb. 2025 That measure, a subset of the broader Consumer Price Index, shows that food inflation overall has come down significantly since the Covid-19 peak, with more recent rates closer to historical norms. Matt Stiles, CNN, 8 Feb. 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 12 Mar. 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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