The enjoyment of physical appetites.
A theory of personal identity which holds that persons are individual organisms of the species Homo sapiens, and the conditions of our persistence and identity are simply those of animals.
The doctrine that humans are merely animals, and lack any spirituality.
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.