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Medical TERMINOLOGY   -   A thru Z

Prefixes, roots, suffixes  [ R ]

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: homeless. Root = 'home' and the suffix is 'less'. It can also refer to a condition, disease, disorder, or procedure.    

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Also check out the medical abbreviations section
 

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Term
[ Meaning ]
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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Medical Calculators - A thru Z
Lab Values - A thru Z