odyn/o

ole/o

olecran/o

olig/o

om/o

omphal/o

onc/o

one

one and a half

onych/o

oophor/o

ophry/o

ophthalm/o

opisth/o

opt/o

optic/o

or/o

orch/o

orchi/o

orchid/o

organ/o

orth/o

osche/o

osphresi/o

ossicul/o

oste/o

ot/o

ov/o

ovari/o

ovul/o

ox/o

oxysm/o

palat/o

pale/o

palliat/o

palp/o, palpat/o

palpebr/o

palpit/o

pancreat/o

pant/o

papill/o

papul/o

parasit/o

parathyroid/o

patell/a

patell/o

path/o

pector/o

ped/o

pedicul/o