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Common Medical Term Root Words, Suffixes, and Prefixes

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Term
Definition
cardi/o   heart  
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derm/o   skin  
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enter/o   small intestines  
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bucc/o   cheek  
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lumb/o   loin (lower part of the back)  
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myc/o   fungus, mushroom  
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viv/o   life  
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adip/o, lip/o, steat/o   fat  
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arteri/o   artery  
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arthr/o   joint  
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axill/o   armpit  
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blephar/o   eyelid  
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cephal/o   head  
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cerebr/o, encephal/o   cerebrum, brain  
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cervic/o   neck  
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cholecyst/o   gallbladder  
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col/o   large intestine  
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cost/o   rib  
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crani/o   skull  
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cyst/o   urinary bladder  
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cyt/o   cell  
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derm/o, dermat/o, cutane/o   skin  
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esophag/o   esophagus  
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gastr/o   stomach  
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hem/o, hemat/o   blood  
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hepat/o   liver  
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lapar/o   abdominal wall  
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laryng/o   larynx, voice box  
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myel/o   spinal cord  
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my/o, muscul/o   muscle  
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nas/o, rhin/o   nose  
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neur/o   nerve  
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ophthalm/o, ocul/o   eye  
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or/o, stomat/o   mouth  
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oste/o   bone  
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ot/o   ear  
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pancreat/o   pancreas  
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pharyng/o   throat  
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pneum/o, pneumon/o, pulmon/o   lung  
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ren/o, nephr/o   kidneys  
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splen/o   spleen  
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thorac/o   chest  
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thyroid/o   thyroid gland  
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trache/o   windpipe, trachea  
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ven/o, phleb/o   vein  
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vertebr/o   vertebra  
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cyan/o   blue  
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erythr/o   red  
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leuk/o   white  
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melan/o   black  
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poli/o   gray  
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phren/o   diaphragm  
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appendic/o   appendix  
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rect/o, proct/o   rectum  
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-ac, -al, -ar, -ary, -eal, -ia, -iac, -ic, -ical, -ose, -ous, -tic   pertaining to  
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-algia   pain  
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-centesis   surgical puncture to remove fluid  
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-cide   to kill or destroy  
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-cyte   cell  
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-ectomy   surgical removal of  
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-emia   blood; blood condition  
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-gram   written record  
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-graph   an instrument used to record  
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-graphy   process of recording  
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-ia   condition, especially an abnormal state  
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-ion   condition  
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-ism   condition  
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-itis   inflammation of  
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-lithiasis   presence of or formation of stones  
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-logy   study of  
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-megaly   enlargement  
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-oid   resembling  
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-oma   tumor  
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-osis   abnormal condition or disease  
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-otomy   surgical incision  
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-pathy   disease  
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-plasty   surgical or plastic repair  
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-plegia   paralysis  
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-pnea   breathing, respiration  
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-rrhaphy   surgical suturing  
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-rrhea   draining, flow, discharge,  
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-rrhexis   rupture  
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-scope   instrument used to look  
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-scopy   examination using a scope, process of looking  
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-sis   action, process, state, condition  
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-stasis   stoppage, controlling, standing  
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-stomy   surgically create an artificial opening (mouth or stoma)  
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a-, an-   without, not, absence of  
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anti-   against  
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auto-   self  
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bi-   two, double  
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brady-   slow  
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dys-   bad, difficult, painful, abnormal  
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epi-   over, above, upon  
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eu-   good, normal  
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hemi-   half  
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hyper-   above, excessive  
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hypo-   less than, under  
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inter-   between  
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intra-   within  
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multi-   many  
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non-   not  
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peri-   around, surrounding  
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poly-   many, much  
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post-   after, behind  
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pre-   before, in front  
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pseudo-   false  
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quadri-   four  
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semi-   half  
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sub-   under, below  
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supra-   above, over  
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tachy-   fast, rapid  
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tri-   three  
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endo-   inside  
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ecto-   outside  
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vascul/o, vas/o, angi/o   blood vessel  
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-meter   instrument used to measure  
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-metry   process of measuring  
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re-   again  
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contra-   against  
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pro-   before, on behalf of  
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de-   down, away from  
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ante-   before  
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gen/o   creation, cause  
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hydr/o   water  
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morph/o   change  
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myc/o   fungus  
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necro   death  
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orth/o   straight  
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path/o   suffering, disease  
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phag/o   eat  
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plas/o   formation  
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py/o   pus  
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scler/o   hard  
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sten/o   narrowing  
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troph/o   nourishment, development  
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xen/o   foreign  
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-icle, -ole, -ule, -ula   small, diminutive suffixes  
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-ia, -ism   condition  
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-ium   tissue, structure  
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-y   condition, procedure  
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-tomy   a cutting procedure  
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tom/o   to cut  
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-ectomy   a cutting out procedure or surgical removal  
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ec-   out  
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-ist   specialist  
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-iatrist   specialist in medicine of  
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-iatrics   medical science  
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-logist   specialist in the study of  
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-logy   study of  
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de-   down, away from  
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ante-, pre-   before  
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pro-   before, on behalf of  
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ab-   away  
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ad-   towards  
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circum-, peri-   around  
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dia-, trans-   through  
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e-, ec,-, ex-   out  
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ecto-, exo-, extra-   outside  
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en-, endo-, intra-   in, inside  
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epi-   upon  
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sub-   beneath  
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inter-   between  
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oligo-   few  
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pan-   all  
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micro-   small  
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macro-   large  
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mono-   one  
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hemi-, semi-   half  
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con-, syn-, sym-   with, together  
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