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Medical terminology is composed of a prefix, root word, and suffix:
Prefix: A prefix is placed at the beginning of a word to modify or change its meaning. Pre means "before." Prefixes may also indicate a location, number, or time.
Root: central part of a word.
Suffix: The ending part of a word that modifies the meaning of the word.
Additional resources:   [Intro to med terms] [Med terms rules] [Med term reference] [Word building reference]  [Practice Exams]

Alphabetical Listing of Med Terms

a b c d e f g h i j k l m
n o p q r s t u v w x y z

Medical Terminology Reference – M

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

For a quick overview and tutorial on medical terminology, check out our Introduction to Medical Terminology.


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