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olig (o)-
few, less than, normal, small
-oligist
person who studies
-oma
tumor, swelling
onco-
mass, tumor, bulk
-opsy
to view
ost (e,eo)-
bone
-oscopy
diagnostic examination
-osis
condition, state, process
ot (o)-
ear
-otomy
cutting into
-ous
full of, pertaining to, condition, containing