What is "enitharmon"

Enitharmon is a major female character in William Blake's mythology, playing a main part in some of his prophetic books. She is, but not directly, an aspect of the male Urthona, one of the Four Zoas. She is in fact the Emanation of Los, also male. There is a complex verbal nexus attached. The Zoa Tharmas has emanation Enion, and Eni-tharm(as)-on is one derivation of her name. That should perhaps be read in the inverse direction though, as a construction of the Tharmas/Enion pair's names. Within Blake's myth, she represents female domination and sexual restraints that limit the artistic imagination. She, with Los, gives birth to various children, including Orc.