Webster's Revised Unabridged Dictionary · 1913

Unisexual

Unisexual , adjective

[Uni- + sexual: compare French unisexuel.]

(Biology) Having one sex only, as plants which have the male and female flowers on separate individuals, or animals in which the sexes are in separate individuals; diocious; -- distinguished from bisexual, or hermaphrodite. See Diocious.