METAMORPHOSES, Ovid's poetical legends of mythical transformations, a large source of our knowledge of classic mythology

METANIRA, a mother, kind to Ceres seeking Proserpine

METEMPSYCHOSIS, transmigration of souls—rebirth of dying men and women in forms of animals or human beings

METIS, Prudence, a spouse of Jupiter

MEZENTIUS, a brave but cruel soldier, opposing Aeneas in Italy

MIDAS

MIDGARD, the middle world of the Norsemen

MIDGARD SERPENT, a sea monster, child of Loki

MILKY WAY, starred path across the sky, believed to be road to palace of the gods

MILO, a great athlete