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Anatomy/Med Term 1
Prefixes Related to Position or Direction
| Prefix | Meaning |
|---|---|
| ab- | away from Ex: abscission = to cut away from |
| ad- | toward Ex: adneural = in the direction of a nerve |
| ante- | before Ex: antemortem = before death |
| circum- | around Ex: circumduction = movement of a part of the body in a circular direction |
| dia- | through or complete Ex: dialysate = the part of a mixture that passes through a dialyzing membrane |
| ecto- | outside Ex: ectoplacental = outside the placenta |
| endo- | within Ex: endobiotic = living as a parasite within a host |
| epi- | around, upon, on, or above Ex: epispinal = on the vertebral column |
| ex- | out, outward, or outside Ex: exclave = detached portion or a gland or outer part |
| exo- | out, outward, or outside Ex: exoteric = arising outside the organism |
| extra- | out, outward, or outside Ex: extraprostatic = outside or independent of the prostrate |
| hyper- | excessive or above Ex: hyperoxidation = excessive oxidation |
| hypo- | below or under Ex: hypocitraturia = abnormally low concentration of citrate in the urine |
| in- | in or into Ex: incision = a cut into |
| infra- | below or beneath Ex: infrathoracic = below the thorax |
| inter- | between Ex: interfemoral = between the thighs |
| intra- | within Ex: intragenal = within a gene |
| meta- | beyond Ex: metainfective = occuring after an infection |
| para- | beside or near Ex: paracystic = alongside or near the bladder |
| per- | through Ex: peranum = by or through the anus |
| peri- | around Ex: pericellular = surrounding a cell |
| post- | after Ex: postcostal = behind the ribs |
| pre- | before or in front of Ex: precapillary = preceding a capillary |
| pro- | before Ex: prochondral = developmental stage prior to the formation of cartilage |
| retro- | back or behind Ex: retropharynx = the back part of the pharnyx |
| sub- | under or below Ex: sublingual = beneath or below the tongue |
| supra- | above Ex: supracerebral = on or above the surface of the cerebrum |
| trans- | across Ex: transcortical = across or through the cortex of the brain |
| ultra- | beyond Ex: ultraligation = ligation of a blood vessel beyond the point where a branch is given off |