(poetic, science fiction) The Sun, the star orbited by the Earth. / (Roman mythology) The sun god; equivalent of the Greek Helios. Brother of Luna and Aurora. / (Norse mythology) The sun goddess.

(fiction, rare) A shapeshifter who can assume the form of a crab.

(spectroscopy) Initialism of Auger electron spectroscopy. / (spectroscopy) Initialism of atomic emission spectroscopy. / (socialism) Initialism of actually existing socialism.

Alternative form of blah blah blah