Definition of "bisexual" in English

adjective

1. (of humans or other animals) Sexually attracted to both same-sex and opposite-sex partners. (Compare pansexual.)

2. (chiefly botany) Having both male and female parts, characteristics, or functions.

3. (chiefly biology) Having two distinct sexes, male and female (as contrasted with unisexual or hermaphroditic).

4. (chiefly biology) Involving two sexes (particularly with regard to reproduction; contrast parthenogenetic or asexual).

noun

1. A person who is bisexual.

2. (botany, rare) A plant or fungus, or part thereof, which is bisexual.

3. (chiefly biology) An organism (that is, a species) which has male and female sexes.