Definition of bisexuals:
(adj) :
(of humans or other animals) Sexually attracted to both same-sex and opposite-sex partners. (Compare pansexual.)
(n) :
A person who is bisexual.
(adj) :
(chiefly botany) Having both male and female parts, characteristics, or functions.
(adj) :
(chiefly biology) Having two distinct sexes, male and female (as contrasted with unisexual or hermaphroditic).
(adj) :
(chiefly biology) Involving two sexes (particularly with regard to reproduction; contrast parthenogenetic or asexual).
(n) :
(chiefly biology) An organism (that is, a species) which has male and female sexes.