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Prefixes
Common Medical Prefixes
| Term | Definition |
|---|---|
| a- | without |
| an- | without |
| anti- | against |
| brady- | slow |
| de- | without |
| dys- | painful, difficult |
| pachy- | thick |
| tachy- | fast |
| ante- | in front of, before |
| endo- | within, inner |
| epi- | above, upon |
| ex- | outward |
| extra- | outside of |
| hypo- | below, under, insufficient, less than normal |
| infra- | below, under |
| inter- | between |
| intra- | inside, within |
| para- | alongside, near |
| peri- | around, near |
| retro- | backward, behind |
| sub- | beneath, under |
| supra- | above |
| trans- | across, through |
| bi- | two |
| di- | two |
| hemi- | half |
| hyper- | excessive, more than normal |
| micro- | small |
| mono- | one |
| multi- | many |
| nulli- | none |
| pan- | all |
| poly- | many, much |
| primi- | first |
| quadri- | four |
| tri- | three |
| ultra- | excess |
| uni- | one |
| neo- | new |
| post- | after |
| pre- | before |
| auto- | self |
| eu- | normal, good |
| hetero- | different |
| homo- | same |
| per- | through |