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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 |