- maxillary torus
- maxillo_alveolar index
- meningeal vein
- mineral tar
- midvein
- midrib
- mast cell disease
- mastitis neonatorum
- muscle fiber
- muscle fibre
- muscle cell
- mastodon
- muscle sense
- mirid
- mirid bug
- mantispid
- membranous labyrinth
- maltose
- malt sugar
- milk snake
- male chest
- male circumcision
- mugwort
- moccasin
- mestastatic mumps
- marianne craig moore
- marian anderson
- mexican beaded lizard
- mexican black cherry
- march 2
- meadow cranesbill
- meadow fern
- mudslide
- munchausen's syndrome
- malt seeds
- munich
- malt extract
- malted
- malted milk
- maryland chicken
- mount parnassus
- migratory grasshopper
- migratory locust
- mrs. humphrey ward
- male fern
- Menopon palladum
- montez
- manna ash
- mimosa bush
- mountain birch