The name Tritogeneia likely means 'born of the Third', this Third one being the supreme god, the Most High. Poseidon (at least Poseidon Helikonios) was once such a god. He was the lord of the water that descended from heaven and a deity closely associated with the celestial pole. His trident is the symbol that indicates his celestial nature, and this symbol developed from a previous one - a raised hand with three fingers. This number of fingers signified the similarity with the dwellers of the sky - the birds, with their three toes in front.