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Prefixes
Medical Prefixes
| Term | Definition |
|---|---|
| a-, an- | without, not, lack of |
| ab- | away from |
| ad- | to, toward, near |
| ante- | before, forward, in front of |
| anti- | against |
| auto- | self |
| bi- | double, two, twice |
| brady- | slow |
| circum- | around |
| contra- | against, opposite |
| de- | down, from |
| dia- | across, through, apart |
| dys- | bad, difficult, abnormal |
| ecto- | outer, outside |
| en- | in, into, within |
| endo- | outer, outside |
| epi- | over, on, upon |
| eryth- | red |
| eu- | normal, good, well, healthy |
| ex- | out, out of, from, away from |
| hemi- | half |
| hyper- | excessive, too much, high |
| hypo- | under, decreased, less than normal |
| in- | in, into, within, not |
| inter- | between |
| intra- | within |
| intro- | into, within |
| leuk- | white |
| macro- | large |
| mal- | bad, illness, disease |
| meg- | large |
| micro- | small |
| mono- | one, single |
| neo- | new |
| non- | not |
| olig- | small, scant |
| para- | beside, beyond, after |
| per- | by, through |
| peri- | around |
| poly- | many, much |
| post- | after, behind |
| pre- | before, in front of, prior to |
| pro- | before, in front of |
| re- | again, backward |
| retro- | backward, behind |
| semi- | half |
| sub- | under, beneath |
| super- | above, over, excess |
| supra- | above, over |
| tachy- | fast, rapid |
| trans- | across |
| uni- | one |