(geometry) Having the same perimeter; applied to the problem of finding a plane figure of the largest possible area whose boundary has a specified length

A chemical compound composed of two tetrazole moieties, used in immunology for detection of alkaline phosphatase.

(slang, chiefly UK) An outhouse or lavatory: a place used for urination and defecation. / (slang, chiefly UK) A toilet: a fixture used for urination and defecation (also figuratively).

plural of Bongard problem