n. [ Proto- + root of Gr. gi`gnesqai to be born: cf. F. protogyne. ] (Min.) A kind of granite or gneiss containing a silvery talcose mineral. [ 1913 Webster ]
(n) a simple protein found in fish sperm; rich in arginine; simpler in composition than globulin or albumin; counteracts the anticoagulant effect of heparin