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Prefixes
The Language of Medicine 11th Edition
| Term | Definition |
|---|---|
| a-, an- | no; not; without |
| ab- | away from |
| ad- | toward |
| af- | toward |
| agora- | marketplace |
| ana- | up; apart; backward; again, anew |
| ante- | before; forward |
| anti- | against |
| apo- | off, away |
| aut-, auto- | self, own |
| bi- | two |
| brachy- | short |
| brady- | slow |
| cata- | down |
| con- | together, with |
| contra- | against; opposite |
| de- | lack of; down; less; removal of |
| dia- | complete; through |
| dorsi- | back |
| dys- | bad; painful; difficult; abnormal |
| ec- | out; outside |
| echo- | reflected sound |
| ecto- | out;outside |
| em- | in |
| en- | in; within |
| end- | in; within |
| endo- | in; within |
| epi- | above; upon; on |
| eso- | inward |
| eu- | good; normal; true |
| ex- | out; away from |
| exo- | out; away from |
| extra- | outside |
| hemi- | half |
| in- | in; into; not |
| infra- | below; inferior to; beneath |
| inter- | between |
| intra- | within; into |
| ipsi- | same |
| ir- | in |
| kern- | nucleus (collection of nerve cells in the brain) |
| macro- | large |
| mal- | bad |
| mega- | large |
| meso- | middle |
| meta- | change; beyond |
| micro- | small |
| multi- | many |
| neo- | new |
| nulli- | none |
| oxy- | rapid; sharp; acid |
| pachy- | heavy; thick |
| pan- | all |
| par- | other than; abnormal |
| para- | near; beside; abnormal; apart from; along the side of |
| per- | through |
| peri- | surrounding |
| polio- | gray matter (of brain or spinal cord) |
| poly- | many; much; increased |
| post- | after; behind |
| pre- | before; in front of |
| primi- | first |
| pro- | before; forward |
| pros- | before; forward |
| pseudo- | false |
| quadri- | four |
| re- | back; again; backward |
| retro- | behind; back; backward |
| semi- | half |
| sub- | under; below |
| supra- | above, upper |
| sym- | together; with |
| syn- | together; with |
| tachy- | fast |
| tetra- | four |
| trans- | across; through |
| tri- | three |
| ultra- | beyond; excess |
| uni- | one |