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[ 1 ] Quick Introduction.

[ 2 ] Word Building Reference: new icon   This is a great reference to help strengthen your understanding of medical terminology.   See how common medical terms are created using the various prefixes, suffixes, and root words.

[ 3 ]  Medical Terms – Singular versus plural rules

[ 4 ]  Medical Terminology Exams  new icon   Twenty new exams were created to test your knowledge of medical terminology.

[ 5 ]  Medical Terms – Prefixes, roots, suffixes (see links below)

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.
Example: cholecystitis. Root = ‘cholecyst/o’ -Definition: gallbladder and the suffix is ‘itis’ – Definition: inflammation. Translation: inflammation of the gallbladder.

Alphabetical Listing of Med Terms

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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


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