The Greek word μήνη (mēnē) means both the Moon and the lunar month.[2] It represents the feminine form of the older masculine noun μήν (mēn), which in turn derives from the oblique stem of the Indo-European word *meh₁nōt ("moon; month").[3] The name of the Phrygian moon-god Men derives from the same word.[4] Further cognates include "Moon" and "Máni."
William Smith writes of Mene as "a goddess presiding over the months".[5]Apostolos Athanassakis and Benjamin Wolkow speculate that Selene's name, which is derived from the word σέλας (selas, "light") and thus means "luminous one", might have originally developed as a euphemism, before becoming the Moon and its goddess's proper name.[2]
Hard, Robin, The Routledge Handbook of Greek Mythology: Based on H.J. Rose's "Handbook of Greek Mythology", Psychology Press, 2004, ISBN9780415186360. Google Books.