I. ˌsü-pər-ˈnü-mə-ˌrer-ē, -ˈnyü-, -mə-rē; -ˈn(y)üm-rē adjective
Etymology: Late Latin supernumerarius, from Latin super- + numerus number
Date: 1605
1.
a. : exceeding the usual, stated, or prescribed number
a supernumerary tooth
b. : not enumerated among the regular components of a group and especially of a military organization
2. : exceeding what is necessary, required, or desired
3. : more numerous
II. noun
( plural -ar·ies )
Date: 1639
1. : a supernumerary person or thing
2. : an actor employed to play a walk-on