- motorbike
- message switching centre
- muscari comosum
- memory cell
- methylene amino derivative
- methyl radical
- monomial(s)
- mesencephalic
- mammilothalamic tract
- Malus baccata
- mineralogical
- mesatiskelic
- metameric
- magnesite
- malachite
- millerite
- manganite
- maltha
- monazite
- molybdenite
- micrography
- microinstruction sequence
- morphism
- morphogeny
- megadolichocolon
- muricate
- moloney toxoid test
- megalomanic
- macropolycyte
- macropodia
- malunion of fracture
- mercurial stomatitis
- manifolding
- medieval greek
- middle greek
- monocular
- mocha
- malathion poisoning
- Minamata disease
- make blood boil
- miniature schnauzer
- muscovitic rhubarb
- margarine
- medicinal hemp
- milroys disease
- momos
- marti
- Maryland golden aster
- mules
- marsh harrier