(biochemistry) A protease in the seminal fluid of some flies

(organic chemistry) Any of a group of indole alkaloids, present in a cyanobacterium, that inhibit the growth of alga

plural of overhead projector

(UK, Canada) A light sword, sharp along the front edge, part of the back edge, and at the point. / (UK, Canada, fencing) A modern fencing sword modeled after the sabre.