masculo-|ˈmæskjʊləʊ|used as combining form of L. mascul-us male. ˈmasculo-ˈfemininea., partly masculine and partly feminine. ˈmasculo-ˈnucleusEmbryology(seequot. 1884); hence ˈmasculo-ˈnucleara., pertaining to a masculo-nucleus.1646Sir T. Browne Pseud. Ep. iii. xvii. 149 Hermaphroditicall and masculo-feminine generations.1830Lyell Princ.Geol. I. 11 One..fiction of the Egyptian mythology was the supposed intervention of a masculo-feminine principle.1884Hyatt in Proc. Boston Soc.Nat. Hist XXIII. 54 We propose..to call the original undifferentiated generative body the nucleus, and its products respectively the male or masculonucleus, and the female or feminonucleus.