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Medical Terminology
prefix and its meaning
| Term | Definition |
|---|---|
| -a; -an | without |
| ab | away from |
| ad- | near, toward |
| ante- | before |
| anti- | against |
| bi- | two, double |
| co, con | with, together |
| contra | opposite |
| ec- | out |
| ecto- | outside |
| em-, en- | in |
| endo- | inside |
| epi- | in addition to |
| ex- | away from, over |
| hemi- | half |
| hyper- | beyond, excessive |
| hypo- | below, deficient |
| infra- | below, beneath |
| inter- | between |
| intra- | within, inside |
| iso- | same |
| meso- | middle |
| pan- | all |
| par-, para- | beside, around, near, abnormal |
| peri- | around |
| post- | after, behind |
| pre- | before, in front of |
| pro- | before, in front of, forward |
| retro- | backward, behind |
| semi- | half |
| sub- | under |
| supra- | above, beyond |
| sym-, syn- | together |
| trans- | across, on the other side |
| tri- | three |
| uni- | one |
| adeno- | gland like |
| amphi- | on both sides |
| ana- | excessive, upward |
| andr(o)- | man, human being |
| ante- | before |
| anti- | against |
| bi- | two, double |
| circum- | all around |
| co-, con-, | with, together |
| de- | away from |
| dextro- | right |
| dia- | through |
| dis- | difficult, painful |
| ec- | out |
| ex- | away from, over |
| extra | on the outside |
| ecto- | outside |
| en- | in |
| endo- | within |
| ento- | inside |
| epi- | on, in addition to |
| eu- | good |
| gyn(ec)- | woman |
| ipsi- | self |
| juxta- | adjacent |
| laevo- | left |
| mega- | big |
| meso- | middle |
| meta- | to, next, change |
| mono- | one |
| orto- | normal |
| pan- | all |
| pseudo- | false, not real |
| sin- | with, together with |
| super- | above, excessive |
| sym-, syn- | together with |