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Prefixes
Direction/Position
| Term | Definition | Examples |
|---|---|---|
| Ab- | away | abduct |
| Ad- | toward | adrenaline |
| Circum- | around | circumcision |
| Peri- | around | pericardium |
| Dia- | through | diagnostic, diarrhea |
| Trans- | through | translate |
| E- | out | evoke |
| Ec- | out | ectopic |
| Ex- | out | exhale |
| Ecto- | outside | ectoderm |
| Exo- | outside | exoskeleton |
| extra- | outside | |
| En- | in, inside | enema |
| Endo- | in,inside | endometriosis, endocrine |
| Intra- | in, inside | intravenous |
| Epi- | upon | epididymis |
| Sub- | beneath | subcutaneous |
| Inter- | between | intercostal |