n. 1 the process or an instance of moderating. 2 the quality of being moderate. 3 Physics the retardation of neutrons by a moderator (see MODERATOR 5). 4 (in pl.) (Moderations) the first public examination in some faculties for the Oxford BA degree. in moderation in a moderate manner or degree.
[ ME f. OF f. L moderatio -onis (as MODERATE) ]