Additional Resources:
Tabers medical dictionary.

Terms: M

Macrophage
Magnesium
Ma huang (Ephedrine)
MAOI (Monoamine oxidase inhibitor)
Marie's disease (Acromegaly)

Melatonin
Menadiol sodium diphosphate (Vitamin K; Phylloquinone; Phytonadione; Menadione; Menaquinone; Menaphthone)
Menadione (Vitamin K; Phylloquinone; Phytonadione; Menaquinone; Menaphthone; Menadiol sodium diphosphate)
Menaphthone (Vitamin K; Phylloquinone; Phytonadione; Menadione; Menaquinone; Menadiol sodium diphosphate)
Menaquinone (Vitamin K; Phylloquinone; Phytonadione; Menadione; Menaphthone; Menadiol sodium diphosphate)
Metabolite
Methionine
Methylxanthines

Microphage
Mineralocorticoids
Mitochondria

Mucosa
Mucous membranes (Mucosa)
Muscular dystrophy
Mutagen

Myocardial infarction 
Myxedema coma