Other forms: heterosexuals
A heterosexual is somebody attracted to people of the other sex. A heterosexual couple, heterosexual relationships, identify as heterosexual.
It works as a noun and an adjective, and the adjective is the more usual — heterosexual people rather than heterosexuals. It was coined in the 1890s, later than you might expect, alongside homosexual, when medicine began classifying such things.
1nounheterosexualSomebody attracted to people of the other sex.
“The new law gave same-sex couples the same right to marry as heterosexuals.”
heterosexual is a person, or an orientation.
From Greek heteros, other, plus sexual. It was coined in the 1890s in medical writing.
Latin
sexuālis
English
sexual
English, today
heterosexual
From hetero- + -sexual. Earliest citation from 1892, in C.G. Craddock's translation of Krafft-Ebbing's Psychopathia Sexualis. sexual Borrowed from Latin sexuālis. by surface analysis, sex + -ual.
Etymology from Wiktionary, CC BY-SA