- madrepore
- madrid
- madrigal
- madrona
- maeandra
- maelstrom
- mae west
- maffia
- mag
- magic carpet
- magic eye
- magic manifests itself in procuring quiet obeisance
- magic mushroom
- magic number
- magicicada septendecim
- magicicada
- magician
- maginot
- magisterially
- magistrate
- magna charta
- monetary unit
- magna cum laude
- magnanimously
- magnesium
- magnesium bicarbonate
- magnesium hydroxide
- magnesium carbonate
- madeira sponge
- madeiras
- mademoiselle
- madia sativa
- madly
- madness
- madoqua
- madwort
- mafa
- magdalena
- macaque
- magic spell
- magical ability
- magical or tantric rites performed by sitting over the chest of a corpse in the cremation ground
- magical spell
- magnanimousness
- magnet
- magnetic bubble memory
- magnetic dip
- magnetic core
- magnetic field
- magnetic equator