- mean distance
- mud dauber
- masefield
- maxfield parrish
- mud midget
- meadow fescue
- melanocarcinoma
- modula
- machine sensible information
- marche
- metal wood
- morphallaxis
- mitosis
- macroevolution
- microevolution
- metastasis
- microcytic_ hypochromic anaemia
- monosomy
- microcytic anemia
- malignant anemia
- mucoid
- mucin
- myogenic theory
- multifrequency pushbutton set
- matrix test
- marcel marceau
- montserrat
- ms_dos
- mohave desert
- marie anne charlotte corday d'armont
- major vestibular gland
- mary ann evans
- melanuria
- mayo_gibbon screnn oxygenator
- mesocuneiform
- motilin
- melanochrous
- melanogen
- master culture
- monohydrate
- multimedia mail
- multimodal curve
- multilocular cyst
- myxoedema
- monaco
- metalepsis
- matrilocal
- morphological adaptation
- meridional aberration
- mont blanc