1. present in excess of the normal or requisite number.
▪ (of a person) not belonging to a regular staff but engaged for extra work.
▪ not wanted or needed; redundant: "books were obviously supernumerary, and he began jettisoning them"
▪ (of an actor) appearing on stage but not speaking.
▪ denoting a structure or organ occurring in addition to the normal ones:"a pair of supernumerary teats"
noun
1. a supernumerary person or thing:"as a supernumerary he was given a variety of jobs"
Word Originearly 17th century: from late Latin supernumerarius ‘(soldier) added to a legion after it is complete’, from Latin super numerum ‘beyond the number’.