The state of being sexually attracted primarily or exclusively to persons of the same sex, sometimes (potentially offensive) restricted to same-sex attraction between males.
Sexual activity with a person of the same sex, sometimes (potentially offensive) restricted to same-sex sex between males.
Sexual urges or drives.
Drives or mental energies related to or based on sexual instincts but not necessarily sexual in and of themselves.
Synonym of albedo in terms of a planet's, such as that of Mars, average surface spectral reflectivity.