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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 – R

rachi/o   spinal column; vertebrae
radi/o   x-rays; radioactivity; radius (lateral lower arm bone)
radicul/o   nerve root
re-   back; again; backward
-receptor, -ceptor   receiver
rect/o   rectum
ren/o   kidney
respir/o   breath
resuscit/o   to revive
reticul/o   network
retin/o   retina
retro-   behind; back; backward
rhabd/o   rod
rhabdomy/o   striated (skeletal) muscle
rhe/o   flow, current, stream
rheumat/o   watery flow
rhin/o   nose
rhiz/o   root
rhod/o   red, rosy
rhytid/o   wrinkle
roentgen/o   x-rays
rose/o   rosy
rot/o, rotat/o   turn, revolve
-rrhage   bursting forth (of blood)
-rrhagia   bursting forth (of blood)
-rrhaphy   suture
-rrhea   flow; discharge
-rrhexis   rupture
rhythm/o   rhythm
rubr/o, rubr/i   red

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


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