plural of piston ring

plural of class ring

Alternative form of make the welkin ring

A finger ring with a short inscription, once popular as lovers' tokens in England.

(algebra, ring theory) A ring which is either: (a) a commutative ring in which every ideal is finitely generated, or (b) a noncommutative ring that is both left-Noetherian (every left ideal is finitely generated) and right-Noetherian (every right ideal is finitely generated).

plural of ring leader

(algebra, ring theory) A ring whose multiplicative operation is commutative.

plural of bull ring

plural of tree ring

plural of belly ring