(mathematics, computing) A function whose value is chosen at random from its domain / (mathematics) A function chosen at random from a set of functions

(physics) The minimum energy needed to remove an electron from the surface of a material

(physics) A function which describes the intensity of scattered radiation in any given direction

(computing) Any function that uses recursion and can call itself until a certain condition is met

(mathematics, complex analysis, algebraic geometry) Any function expressible as the quotient of two (coprime) polynomials (and which thus has poles at a finite, discrete set of points which are the roots of the denominator).

(computing) A function used in an operating system that is not available to application programs.

(mathematics) Any function whose range is n-dimensional

(mathematics) Any function whose values remain bounded by some constant.

(biology) A reproductive strategy in some amphibians wherein the male will inseminate a fresh newly-dead female corpse, fertilizing the still viable eggs, and then squeezing the corpse to eject the newly fertilized eggs into the water.

Any of various specific mathematical functions that have more or less established names and notations due to their importance.