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Medical Terminology
Prefixes
| Term | Definition |
|---|---|
| a- | without; not; away from |
| ab- | from; away from; absent |
| ad- | toward; increase |
| alb- | white |
| ambi- | both; both sides |
| an- | without; not |
| ana- | not; without; against |
| aniso- | unequal |
| ante- | before; in front |
| anti- | against |
| auto- | self |
| bi- | two; double |
| bio- | life |
| brady- | slow |
| cata- | down; under against; lower |
| cine- | movement |
| circum- | around |
| con- | together; with |
| contra- | against |
| de- | down; from |
| dia- | through; between |
| dis- | free of; to undo; double; negative |
| dys- | bad; difficult; painful; disordered |
| echo- | sound |
| ecto- | outside |
| endo- | within; inner |
| epi- | upon; over; after |
| eu- | well; easily; good; normal |
| ex- | away from; outside |
| exo- | outward |
| extra- | outside; beyond |
| hemi- | half |
| homeo- | likeness; same |
| homo- | same |
| hydro- | water |
| hyper- | excessive; above |
| hypno- | sleep; hypnosis |
| hypo- | under; below; beneath; less than normal |
| idio- | individual |
| im- | not |
| in- | in; inside; within; not |
| infra- | beneath; below; under |
| inter- | between |
| intra- | within |
| juxta- | near; beside |
| mal- | bad; poor |
| mega- | large |
| meso- | middle |
| meta- | beyond; after; change |
| milli- | one-thousandth |
| mono- | one; single |
| multi- | many |
| non- | not |
| nulli- | none |
| oxy- | rapid; sharp |
| pachy- | thick |
| pan- | all |
| par- | apart from |
| para- | near; beside; beyond; two like parts |
| per- | through; intense |
| peri- | through; intense |
| poly- | many; much |
| post- | after; behind |
| pre- | before; in front |
| primi- | first |
| pseudo- | false |
| quadri- | four |
| retro- | backward; behind |
| rube- | red |
| semi- | half |
| sub- | beneath; under |
| supra- | above; over; beyond |
| sym- | joined; together |
| syn- | joined; together |
| tachy- | rapid |
| trans- | across; through |
| tri- | three |
| ultra- | beyond; excess |
| uni- | one |
| a- |