- munchausen syndrome
- muncie
- mechanist
- modern hebrew
- maleseet
- minor premise
- micropterus pseudoplites
- Militant Tendency
- marum
- motor ataxia
- Manda
- mikhail gorbachev
- metternich
- Mickey Finn
- metacarpophalangeal joint
- matabele
- microprocessor
- micro code
- memory chip
- microprocessor compiler
- microprocessor bit slice
- Menomini
- Miami
- Mikmaq
- Mohican
- Menominee
- mosander
- maracay
- metabolic
- municipal corporation
- matutinal
- matzah meal
- matzo meal
- mockernut
- mockernut hickory
- maurice de vlaminck
- margrave
- medusa's head
- medusa
- medusan
- mandibular gland
- mefloquine
- methyl salicylate
- mistral
- monkey island
- mud house
- mortuary house
- mist irrigation
- mortons metatarsalgia
- man in the street