(computer security) A function that may contain tainted values. / (ecology) An environment’s ability to absorb and render pollution harmless.

Alternative spelling of high-functioning

(databases) A function that performs a calculation using values from several rows, but does not group them into a single row.

A special function that appears when studying an idealized paramagnetic material in statistical mechanics.

(mathematics) a function that has derivatives of all finite orders everywhere in its domain.

plural of functional beverage

A beverage with added functionality or ingredients and consumed for its supposed health benefits.

(economics) A function that describes the relationship between consumption and disposable income.

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

(mathematics) An element of the range of a function. (Or, employing the "machine" metaphor, it is one of the "outputs" of a function.)