noun ·Rare ·Advanced level
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A ring which is contained in a larger ring, such that the multiplication and addition on the former are a restriction of those on the latter. When rings are required to have a multiplicative identity (as is standard in most branches of algebra), the subring must also have the same multiplicative identity as the larger ring.
Common synonyms include: substructure.
Pronounced /ˈsʌbˌɹɪŋ/.
From sub- + ring.