1.  Mythologically, the daughter if Inachus, a Greek river god; she was a nymph seduced by Zeus who impregnated her. He turned her into a heifer and eventually restored her. She was the ancestor of Heracles. The Greeks also associated her with the Moon, and she was referred to as the “horned virgin,” associated both with the Moon and the bull.

2.  One of the larger moons of Jupiter, sometimes used in astrological interpretations. It was discovered in 1610 and given that name by Galileo.

3.  A repeated expression in Aleister Crowley’s famous "Hymn to Pan."

4.  A cry of victory, celebration, or triumph used by some Pagans and Thelemites. It was originally pronounced “yo!” but most magickal people today pronounce it “EE-yo!”