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.
Through this, the team was able to see that new memories were replayed and cemented in the brain during a fleeting moment in one of the non-REM sleep stage subsets, which corresponded with the animals' pupils appearing contracted. New Atlas, 2 Jan. 2025 But in 2015, scientists in South Korea demonstrated that people with a disease called focal epilepsy can develop seizures because of somatic mutations that create faulty genes in a subset of brain cells. Jason Liebowitz, The Atlantic, 2 Jan. 2025 These reports are subsets of the brand’s Annual Global Retirement Index, which the company released early due to the increase in demand after the recent presidential election. Laura Begley Bloom, Forbes, 1 Jan. 2025 To determine how many endangered bats a wind farm kills, for example, the developer will hire consultants to go out to a subset of turbines and search the ground for dead animals, Shuey said. Karl Schneider, The Indianapolis Star, 27 Dec. 2024 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

Dictionary Entries Near subset

Cite this Entry

“Subset.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subset. Accessed 18 Jan. 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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