Of or pertaining to sex or the sexes in general: as, sexual characteristics.Distinctive of sex, whether male or female; peculiar to or characteristic of either sex; genital: as, sexual organs: the sexual system.Of the two sexes; done by means of the two sexes; reproductive: as, sexual intercourse; sexual reproduction.Peculiar to or affecting the sexes or organs of sex; venereal: as, sexual disease or malformation.Having sex: sexed; separated into two sexes; monœcious: the opposite of asexual: as a sexual animal.Such degree of affinity between the sexes of different species as enables these species to interbreed or hybridize.In botany, a system of classification founded on the distinction of sexes in plants, as male and female. Also called sexual method, artificial system, Linnean system. See Linnean.