Homosexual
late 19th century: from homo- ‘same’ + sexual.
wiktionary
Borrowed from German Homosexual, from homo-(“same”) + sexual(“relating to sex or sexuality”), coined by Karl-Maria Kertbeny in 1869, and popularized in Richard von Krafft-Ebing's 1886 Psychopathia Sexualis (in German) and Charles Gilbert Chaddock's 1892 English translation thereof (compare bisexual), displacing the slightly older term Uranian. Equivalent to homo- + -sexual.
etymonline
homosexual (adj.)
1892, in C.G. Chaddock's translation of Krafft-Ebing's "Psychopathia Sexualis," from German homosexual, homosexuale (by 1880, in Gustav Jäger), from Greek homos "same" (see homo- (1)) + Latin-based sexual.
'Homosexual' is a barbarously hybrid word, and I claim no responsibility for it. It is, however, convenient, and now widely used. 'Homogenic' has been suggested as a substitute. [H. Havelock Ellis, "Studies in Psychology," 1897]
Sexual inversion (1883, later simply inversion, by 1895) was an earlier clinical term for "homosexuality" in English, said by Ellis to have originated in Italian psychology writing. See also uranian. Unnatural love was used 18c.-19c. for homosexuality as well as pederasty and incest. In 17c.-18c., pathic was used as a noun and adjective in reference to a man that submits to sexual intercourse with another man. Related: Homosexually.
homosexual (n.)
"homosexual person," by 1895, from homosexual (adj.). In technical use, either male or female; but in non-technical use almost always male. Slang shortened form homo attested by 1929.
