scheme

(rhetoric, obsolete) An artful deviation from the ordinary arrangement of words.

(astrology) A representation of the aspects of the celestial bodies for any moment or at a given event.

A systematic plan of future action.

A plot or secret, devious plan.

An orderly combination of related parts.

A chart or diagram of a system or object.

(mathematics) A mathematical structure that enlarges the notion of algebraic variety in several ways, such as taking account of multiplicities and allowing "varieties" defined over any commutative ring (e.g. Fermat curves over the integers).

(UK, chiefly Scotland, colloquial) A council housing estate.

(Internet) Part of a uniform resource identifier indicating the protocol or other purpose, such as http: or news:.

(UK, pensions) A portfolio of pension plans with related benefits comprising multiple independent members.