A replacement made at the last minute, usually in a sporting context. / An outsider.

plural of ringe

The amount that fills or makes up a ring.

Ringlike or pertaining to rings.

plural of ringful

(military) The innermost circle of a nuclear explosion, within which all structures are destroyed.

A circumscribing object, (roughly) circular and hollow, looking like an annual ring, earring, finger ring etc. / A round piece of (precious) metal worn around the finger or through the ear, nose, etc.

The resonant sound of a bell, or a sound resembling it. / (figuratively) A pleasant or correct sound. / (figuratively) A sound or appearance that is characteristic of something.

(intransitive) Of a bell, etc., to produce a resonant sound. / (transitive) To make (a bell, etc.) produce a resonant sound. / (transitive) To produce (a sound) by ringing.

(algebra) An algebraic structure which consists of a set with two binary operations: an additive operation and a multiplicative operation, such that the set is an abelian group under the additive operation, a monoid under the multiplicative operation, and such that the multiplicative operation is distributive with respect to the additive operation.