Basic medical terminology is used to precisely describe the human body components, processes, illnesses, medical procedures, and pharmacology. Medical terms are used in the field of medicine, and clinical settings. This section deals with all med terms beginning with the letter M, and features a med term prefix list along with roots and suffixes.

Letter M – Cusis Medical Term Medical Terminology – A to Z

macro-  large
mal-  bad
-malacia  softening
malleol/o  malleolus
mamm/o  breast
mandibul/o  mandible (lower jaw bone)
-mania  obsessive preoccupation
-masesis  mastication, chewing
mast/o  breast
mastoid/o  mastoid process (behind the ear)
maxill/o  maxilla (upper jaw bone)
meat/o  meatus (opening)
medi/o  middle
medic/o  to heal, healing
mediastin/o  mediastinum
medi/o  middle
medull/o  medulla (inner section); middle; soft, marrow
mega-  large
-megaly  enlargement
melan/o  black
mel/o  limb, limbs
men/o  menses; menstruation
mening/o  meninges (membranes covering the spinal cord & brain)
meningi/o  meninges
ment/o  mind; chin
mer/o  part
meso-  middle
meta-  change; beyond
metacarp/o  metacarpals (hand bones)
metatars/o  metatarsals (foot bones)
-meter  measure
method/o  procedure, technique
metr/o  uterus (womb); measure
metri/o  uterus (womb)
-metry  process of measuring
mi/o  smaller; less
micro-  small
-mimesis  imitation, simulation
-mimetic  mimic; copy
-mission  to send
-mnesia  memory
mogi-  difficult
mon/o  one; single
morph/o  shape; form
mort/o  death
-mortem  death
-motor  movement
muc/o  mucus
mucos/o  mucous membrane (mucosa)
multi-  many
muscul/o  muscle
mut/a  genetic change
mutagen/o  causing genetic change
my/o  muscle
myc/o  fungus
mydr/o  wide
myel/o  spinal cord; bone marrow
myocardi/o  myocardium (heart muscle)
myom/o  muscle tumor
myos/o  muscle
myring/o  tympanic membrane (eardrum)
myx/o  mucus

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