[aph.ro.di.si.ac] n [Gk aphrodisiakos sexual, gem with aphrodisiac properties, fr. aphrodisia heterosexual pleasures, fr. neut. pl. of aphrodisios of Aphrodite, fr. Aphrodite] (1719) 1: an agent (as a food or drug) that arouses or is held to arouse sexual desire
2: something that excites -- aphrodisiac also aph.ro.di.si.a.cal adj