(mathematics) The process of converting a discrete time-based function into its frequency-based representation.

(dated) Costing fourpence.

A coin or stamp worth fourpence.

plural of fast Fourier transform

plural of inverse Fourier transform

plural of fourth grade

Collectively, peoples living nomadic, pastoral, hunter-gatherer or other ways of life outside the modern industrial norm.

(algebraic geometry) The fourth coordinate indicating a position along the fourth axis. / (physics) The dimension of time.

plural of fourball

(golf) A match between two teams of two golfers, each playing his or her own ball throughout the round rather than alternating shots, and each hole won by the team whose individual golfer has the lowest score.