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Table 3
Common Medical Prefixes
| Term | Definition |
|---|---|
| a-; an- | no; not; without |
| ana- | against; upward; back |
| ante- | before; forward |
| anti- | against; opposite |
| bi- | two; both |
| brady- | slow |
| contra- | opposite; against |
| dys- | painful; difficult; bad |
| en-; endo- | inside; within |
| epi- | above |
| ex- | out; outward |
| hyper- | excessive; above |
| hypo- | insufficient; below |
| infra- | under; below |
| inter- | between |
| intra- | within |
| iso- | equal; same |
| micro- | small |
| multi- | many; multiple |
| neo- | new |
| para- | beside; near |
| per- | through |
| peri- | around; about |
| poly- | many; excessive |
| post- | after; behind |
| pre- | before |
| semi- | half; one-half |
| sub- | below; under |
| tachy- | fast |
| trans- | through; across |