ˈfʌŋkʃənl adj. 1 of or
serving a
function. 2 (esp. of buildings) designed or
intended to be
practical rather than attractive;
utilitarian. 3 Physiol. a (esp. of disease) of or affecting
only the functions of an
organ etc.,
not structural or
organic. b (of
mental disorder) having no discernible organic
cause. c (of an organ) having a function, not functionless or
rudimentary. 4
Math. of a function. øfunctional
group Chem. a group of atoms
that determine the reactions of a compound containing the group. øøfunctionality n. functionally adv.