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2017 Word of the Year

semigroup

[sem-ee-groop] /ˈsɛm iˌgrup/
noun, Mathematics.
1.
an algebraic system closed under an associative binary operation.
Origin of semigroup
1925-1930
First recorded in 1925-30; semi- + group
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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