plural of functional

In good working order. / Useful; serving a purpose, fulfilling a function / Only for functional purposes, notably in architecture

(mathematics) A function that takes a function as its argument; More precisely: A function y=f(x) whose argument x varies in a space of (real or complex valued) functions and whose value belongs to a monodimensional space. An example is the definite integration of integrable real functions in a real interval.

(uncountable) The ability to do a task, performance, or execution; a set of functions that something is able or equipped to perform.

In a functional manner.

plural of functionality

(architecture) A doctrine, in several fields, that the function of something should be reflected in its design and the materials used in its construction

present participle of functionalize

To provide something with a function / (organic chemistry) To add a functional group to a compound

The act of functionalizing.