Pronunciation: ( ˌ )rez- ' meth-rin, - ' m ē th-
Function: noun
Etymology: res- (prob. transposed from ester ) + -methrin, blend of methyl and -ethrin (as in pyrethrin )
Date: 1971
: a nonpersistent synthetic insecticide C 22 H 26 O 3 that is a derivative of pyrethrin and is used in aerosols