Noah Webster's Dictionary 1. (n.) A study or collection of myths; a treatise on myths. 2. (n.) A body of myths; esp., the collective myths which describe the gods of a heathen people; as, the mythology of the Greeks. Int. Standard Bible Encyclopedia MYTHOLOGY mi-thol'-o-ji. See FABLE; BABYLONIA AND ASSYRIA, RELIGION OF; GREECE, RELIGION IN ANCIENT.