homosexuality

noun2

1. •
   The state of being sexually and romantically attracted primarily or exclusively to persons of the same sex, sometimes (potentially offensive) restricted to same-sex attraction between males.

   • Great diminution or complete absence of sexual feeling for the opposite sex, with substitution of sexual feeling and instinct for the same sex. (Homo-sexuality, or contrary sexual instinct). — 1892
2. •
   Sexual activity with a person of the same sex, sometimes (potentially offensive) restricted to same-sex sex between males.

   • Bourneville believes that 75 per cent. of the inmates of the Parisian venereal hospitals have practised homosexuality. — 1897