Adjective
1. designed for or capable of a particular function or use;
"a style of writing in which every word is functional""functional architecture"2. involving or affecting function rather than physiology;
"functional deafness"3. relating to or based on function especially as opposed to structure;
"the problem now is not a constitutional one; it is a functional one""delegates elected on a functional rather than a geographical basis"4. fit or ready for use or service;
"the toaster was still functional even after being dropped""the lawnmower is a bit rusty but still usable""an operational aircraft""the dishwasher is now in working order"5. designed for or adapted to a function or use;
"functional education selects knowledge that is concrete and usable rather than abstract and theoretical""functional architecture"6. (of e.g. a machine) performing or capable of performing;
"in running (or working) order""a functional set of brakes"