supernumerary


su·per·nu·mer·ary

adj
\ˌsü-pər-ˈn(y)ü-mə-ˌrer-ē, -ˈn(y)üm-(ə-)rē\

Definition of SUPERNUMERARY

: exceeding the usual or normal number <supernumerary teeth> <a supernumerary rib>

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