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2017 Word of the Year

subring

[suhb-ring] /ˈsʌbˌrɪŋ/
noun, Mathematics.
1.
a subset of a ring that is a subgroup under addition and that is closed under multiplication.
Compare ring1 (def 22).
Origin of subring
1950-1955
First recorded in 1950-55; sub- + ring1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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