Complex sentence: In Egyptian mythology, Tefnut (alternate spellings Tefenet, Tefnet) is a goddess of water and fertility, indeed her name means "moist waters" (i.e. rain).
Split into simpler sentences: In Egyptian mythology, Tefnut (alternate spellings Tefenet, Tefnet) is a goddess of water and fertility. Her name means "moist waters" (i.e. rain).