subset

[suhb-set]

noun

1. a set that is a part of a larger set.

2. Mathematics.,  a set consisting of elements of a given set that can be the same as the given set or smaller.

subset

/ ˈsʌbˌsɛt /

noun

1. maths

   1. a set the members of which are all members of some given class: A is a subset of B is usually written A⊆B

   2. A⊂B. one that is strictly contained within a larger class and excludes some of its members

2. a set within a larger set

subset

1. A set whose members are all contained in another set. The set of positive integers, for example, is a subset of the set of integers.

Word History and Origins

Origin of subset¹

First recorded in 1900–05; sub- + set

Example Sentences

Nine Invesco ETFs are listed that weight the S&P 500 differently or select subsets of the index.

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It didn’t indicate any subsets of patients in which the drug worked.

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More importantly, the S&P 500 has returned 278% over the past decade, beating the S&P 500 Dividend Aristocrats, a subset of companies with many years of raising payments, by more than 100 points.

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The significance of this discovery became clearer when a Japanese study on supercentenarians, meaning individuals who live well past 100, found that this same T helper cell subset was abundant in their immune systems.

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The Journal examined all the documents released this week by Congress, which is a subset of Epstein’s correspondence.

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Related Words

• subdivision