(UK, law, historical) The southeastern circuit of assize, including the Home Counties (except Middlesex) and Cambridgeshire, Norfolk, and Suffolk.

(astronomy) The great circle through an object whose location is to be determined and the two celestial poles.

(of a black hole) Synonym of photon sphere

(finance, slang, historical) Traders in South African mining shares.

A display of ceremonial grandeur.

plural of circular cone

plural of circuit rank

plural of circular queue

celestial equator

(algebra) The group of all complex numbers of unit modulus, with the group operation being complex multiplication.