Gonochorism \Gon`o*cho"rism\, n. [Gr. ? offspring + ? to
separate.]
(a) Separation of the sexes in different individuals; --
opposed to hermaphroditism.
(b) In ontogony, differentiation of male and female
individuals from embryos having the same rudimentary
sexual organs.
(c) In phylogeny, the evolution of distinct sexes in species
previously hermaphrodite or sexless.
[1913 Webster]