1
- present in excess of the normal or requisite number, in particular定额以外的, 额外的, 尤指：
1.1
- (of a person) not belonging to a regular staff but engaged for extra work（人）编外的。
1.2
- not wanted or needed; redundant多余的：
books were obviously supernumerary, and he began jettisoning them.
书明显多余了, 所以他开始丢弃。
1.3
- Botany & Zoology denoting a structure or organ occurring in addition to the normal ones【植, 动】（结构, 器官）多余的：
a pair of supernumerary teats.
一对多余的乳头。
1.4
- (of an actor) appearing on stage but not speaking（演员）无台词的, 跑龙套的。
词源
early 17th cent.: from late Latin supernumerarius '(soldier) added to a legion after it is complete', from Latin super numerum 'beyond the number'.