光〔性〕甲脱离：例如用四环素或甲氧补骨脂素(methoxypsoralen)治疗后暴露于阳光或紫外线引起的甲脱离- mariahuana; mariajuana
- Marie-Bamberger disease
- Marie's ataxia
- Marie-Tooth disease
- marihuana
- marijuana
- Marinesco's sign,succulent hand
- marinobufagin
- Marinol
- Mariotte's experiment, law, spot
- mariposia
- Maris-Strümpell disease, syndrome
- maritonucleus
- Marjolin's ulcer
- mark
- marker
- marking
- Marlow's test
- marmoration
- marmoreal
- marmot
- Marogen
- Maroteaux-Lamy syndrome
- Marplan
- marrow