- mithra
- mithraic
- mycodextrin
- mammalogy
- mithraistic
- mithras
- mammary neuralgia
- moss genus
- maladie de rojer
- monotropic change
- m. j. schleiden
- malmo
- merging
- micromicron
- moving in the skies
- mitigating circumstance
- muscular atrophy
- melanchthon
- melanotic
- molotov
- milwaukee
- migratory quail
- maryland yellowthroat
- maleficence
- manioc
- male bonding
- myology
- mandler filter
- mandibulometer
- maksutov telescope
- maxim gorki
- man—made up of mortal stuff
- Middle Irish
- mallotoxin
- mogadishu
- mors
- marcello malpighi
- moss hart
- maritimes
- manna gum
- moloch
- molokai
- monilial cystitis
- microsporum andouini
- microsporum canis
- microsporum gypseum
- monocaine
- mugil liza
- malabsorption syndrome
- macroradiography