- memory hierarchy
 - mondrian
 - monogyny
 - mesalliance
 - Metycaine
 - maria montesorri
 - midi_pyrenees
 - marxism_leninism
 - mother teresa
 - mother theresa
 - mediastinal pleura
 - mediastinal teratoma
 - morphological upper facial index
 - mesosternale
 - microscopical lesion
 - modified
 - modifiable
 - microtubule
 - mediaevalism
 - miliaria profunda
 - myxomatous transformation
 - myxoma
 - manually
 - manual answering
 - mitral prolapse
 - mastigomycota
 - many an
 - marcus ulpius traianus
 - meadow mushroom
 - marginal ear vein
 - marginal utility
 - marginal index
 - marginal lipping
 - masonic
 - marcuse
 - misbranded
 - moldboard
 - microsoft access
 - metacentric
 - mandibular angle
 - mandibular arch
 - malaria parasite
 - movie projector
 - meningocyte
 - microcrystalline
 - molluscicide
 - molluscacide
 - microcomputer word processing
 - martensite
 - medgar evers