Tefnut, primordial Egyptian goddess of moisture, is one of the first nine deities in the Heliopolitan Theological System. According to the genealogy of the priests of Heliopolis, she was created from the breath or saliva of the creator sun god Atum. She is the sister/consort of Su, and mother of Geb and Nut. Her main cult sanctuary was in Heliopolis. Tefnut, like Su, can be one of several manifestations of the "eye of Re," and as such she appeared either as a lion or in human form. According to the Pyramid Texts, she created pure water from her vagina. In a different context she took the form of a snake encircling the scepter. A.G.H.
Grimal, Pierre, Larousse World Mythology, Secaucus, New Jersey, Chartwell Books, 1965, p. 32
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 255