functional

noun

(mathematics, functional analysis) A scalar-valued linear function on a vector space.

(mathematics) A function that takes a function as its argument; more precisely, a function whose argument varies in a space of (real or complex valued) functions and whose value belongs to a monodimensional space.

(computing) An object encapsulating a function pointer (or equivalent).

adjective

Useful; serving a purpose, fulfilling a function.

In good working order.

Only for functional purposes, notably in architecture.

Of or relating to one's role or office; official.

(physiology, psychology) Characterizing functioning in environment, being symptoms that do not presuppose alteration of organic structure.

Optimized for all-around physiological benefit.

(mathematics) Of or relating to a function or functions.

(computing theory) Having semantics defined purely in terms of mathematical functions, without side-effects.

Roots

fungorfunct- · Latin · perform, function

Synonyms for functional

operationaladj functioningn operativeadj utilitarianadj serviceableadj practicaladj structuraladj usefuladj efficientadj effectiveadj

Synonyms & related words for functional

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Words related to functional

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Synonyms for functional

Common synonyms for functional include operational, functioning, operative, utilitarian, serviceable, practical, structural, useful — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does functional come from?

The word functional breaks down into one root of Latin origin: the root funct-, from Latin fungor (“perform, function”). Explore each root to see other English words built from the same source.