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MED TERM
TERMINOLOGY Appendix A: Prefixes
| Term | Definition |
|---|---|
| a-, an- | not, without, lacking |
| ab-, abs- | from; away; off |
| ad- | to, toward; near the midline |
| ambi- | 1. around, on all sides 2. both, double |
| an- | 1. not; 2. up; upward; back; backward |
| ant-, anti- | against, opposite |
| ante- | 1. before |
| antero- | Anterior |
| apo- | separated from; derived from |
| auto- | self, same |
| bi- | twice; double |
| brachy- | short |
| brady- | Slow |
| cata- | Down |
| circum- | Around |
| co-, col-, com-, con-, cor- | Together |
| com- | with, together |
| con- | with, together |
| contra- | opposed, against |
| de- | away from |
| di-, dif-, dir-, dis- | not; separated |
| dia- | through; throughout; completely |
| dys- | abnormal, difficult; painful |
| ecto- | outer, on the outside |
| epi- | over |
| eu- | well, good, normal |
| ex-, exo- | external; out of; away from |
| extra- | without, on the outside |
| hemi- | half |
| hyper- | excessive or above normal |
| hypo- | low, below normal |
| in- | 1. into; 2. not |
| infra- | positioned beneath |
| inter- | between; within |
| intra- | within |
| iso- | equal; same |
| macro- | large; long |
| mal- | bad; inadequate; abnormal |
| mega-, megalo- | 1. very large; huge; 2. abnormally large; enlarged |
| mes-, meso- | middle; median |
| meta- | after, behind, altered |
| metr-, metri-, metro- | uterus |
| micro- | small; tiny |
| mid- | middle |
| mon-, mono- | Single |
| multi- | many |
| my-, myo- | muscle |
| neo- | new, recent |
| pan-, panto- | all; entire; the whole |
| par-, para- | 1. near; beside 2. beyond; outside 3. assistant; associate 4. abnormal |
| per- | 1. through; 2. intensely |
| peri- | about, around, near |
| pluri- | several; more |
| poly- | many; multiple |
| post- | after, following |
| pre- | before; in front of |
| primi- | first |
| pro- | before, forward |
| quadra-, quadri- | four |
| re- | 1. again; 2. backward |
| retro- | 1. backward; 2. located behind |
| semi- | half; partial; similar to |
| sub- | 1. less than; 2. under; 3. inferior |
| supra- | above; over |
| syl-, sym-, syn-, sys- | 1. together; united; 2. same; similar |
| tachy- | speedy; fast; rapid |
| trans- | across; through |
| tri- | three |
| ultra- | 1. beyond; 2. excessive |
| un- | not |
| uni- | one; single |
| presby- | older age |
| endo- | inside, within |
| para- | beside |
| pseudo- | false |