MAE (moving all extremities)

MAF (minor allele frequency)

MAFO (molded ankle foot orthosis)

Mag (magnesium)

MAI (mycobacterium avium intracellular)

MAL (mid-axillary line)

MALT (mucosa-associated lymphoid tissue)

MAMC (midarm muscle circumference)

man. prim. (first thing in the morning)

mand (mandible, mandibular; mandatory)