-- a) From the Greek homos meaning same / the same, as in homosexuality (same-sex love), homogenous (uniform). (The opposite is hetero- from the Greek heteros meaning different from);
-- b) From the Latin homo, meaning human / human being (a member of the genus Homo), as in Homo sapiens, hominophobia, homicide.
3. Homo , a widespread abbreviation of homosexual; pejorative when used by heterosexuals to refer to a male or female homosexual; homos , refers derogatorily to homosexuals in general. A gay man was once referred to as a four-letter man (H-O-M-O).
Quote: Gay slogan: ' Homosexuality is not a four-letter word.'