obesity ; obes.at+ity.n
oblique fissure ; obliqu.idelong+e / fiss.plit+ure.n
oblique muscle layer ; oblique.lanting / (mus.mouse+cle.small)muscle / (lay.lay+er.thing)tier
obsession ; ob.against+sess.sed.sit+ion.n
obsessive-compulsive disorder ; OCD ; ob.against+sess.sed.sit+ive형 / com.strongly+puls.pell.drive+ive.a/ ( dis.apart+order.order)
obstipation ; ob.stopping+stip.stiff+at+ion.n
obstructive jaundice ; (ob.stopping+struct.build+ive.a) / jaund.yellow+ice
obturator foramen ; ( ob.against+tur.swell)blockup+at+or.thing / for.perforation+a+men.n
occipital belly ; oc.against.back+cipit.head+al.a / belly
occipital belly of occipitofrontalis muscle ; oc.against.back+cipit.head+al.a / belly / of / occipito+front.forehead+al+is / muscle
occipital bone ; oc.against.back+cipit.head+al.a / bone
occipital lobe ; oc.against.back+cipit.head+al.a / lobe
occipital presentation ; ( oc.back+cipit.head+al.a) / ( pre.before+sent.be+at+ion.n)
ocular muscle ; ocul.eye+ar.a / muscle
oculo utro ; ou ; ocul.eye+o / utro.either
oculomotor nerve ; ocul.eye+o+mot.move+or.thing / nerve
oculus dexter ; OD ; ocul.eye+us / dexter.right
oculus sinister ; OS ; ocul.eye+us / sinister.left
Oddi sphincter ; Oddi / sphinc.strangle+ter.thing
olfactory bulb ; ol.smell+fact.make+ory.a / bulb.ball
olfactory nerve ; ol.smell+fact.make+ory.a / nerve
olfactory nerve ; ol.smell+fact.make+ory.a / nerve
olfactory tract ; ol.smell+fact.make+ory.a / tract.drag.duct
oligodendroglia ; olig.few+o+dendr.tree+o+gli.glue+a.n
oligodendroglioma ; olig.few+o+dendr.tree+o+gli.glue+oma.tumor
oligodontia ; oligo.few+odont.tooth+ia.n
oligohydramnios ; oligo.few+hydr.water+amnios
oligomenorrhea ; oligo.few+men.menses+o+rrhe.flow+a.n
oligospermia ; olig.few+o+sperm.semen+ia.n
oliguria ; olig.small+ur.urine+ia.n
omental bursa ; oment.ointment.omentum+al.a / bursa.purse
once a day ; q.d. : quaque.every / die.day
onychia ; onych.nail+ia.n
oophorectomy ; oo.egg+phor.fer.bear+ec.out+tom.cut+y.n
oophorectomy ; o.egg+o+phor.fer.carry+( ec.out+tom.cut+y.n)
oophoritis ; oo.ovum.egg+phor.fer.bear+itis.inflammation
oophoropexy ; oo.egg+phor.fer.bear+o+pex.peg+y.n
open fracture ; open / fract.break+ure.n
open heart surgery ; open / heart / s(chiro.hand)+urg.work+ery.n
open reduction ; open / ( re.again.back+duct.lead+ion.n)restore
ophthalmic division ; ophthalm.eye+ic.a / ( dis.apart+vis.divide+ion.n)
ophthalmic nerve ; ophthalm.eye+ic.a / nerve
ophthalmoscopy ; ophthalm.eye+o+scop.observe+y.n
optic canal ; opt.sight+ic.a / canal.duct
optic chiasm ; opt.sight+ic.a / ( chi.X+asm).diagonalcrossing
optic nerve ; opt.sight+ic.a / nerve
optic nerve disk ; opt.sight+ic.a / nerve / disk
optic neuritis ; opt.sight+ica. / neur.nerve+itis.inflammation
optic radiation ; opt.sight+ic.a / radi.ray+ate+ion.n
optic tract ; opt.sight+ic.a / tract.drag.path
optician ; opt.sight+ic.a+ian.n
optometrist ; opt.sight+o+metr.measure+ist.expert
ora serrata ; ora.os.mouth / serrata.lockout.sawtooth
oral administration : or.os.mouth+al.a / ad.toward+ministr.waitupon+at+ion.n
oral cavity ; or.mouth+al.a / cav.hollow+ity.n
oral glucose tolerance test ; OGTT ; or.os.mouth+al.a / ( gluc.sweet+ose) / toler.endure+ance.n / test
orbicularis oculi muscle ; orb.circle+i+cul.small+ar.a+is / ocul.eye+i / muscle
orbicularis oris muscle ; orb.circle+i+cul.small+ar.a+is / or.os.mouth+is / muscle
orbit ; ( orb.circle+it)track
orchiectomy ; orchi.testicle+( ec.out+tom.cut+y.n)
orchiectomy ; orchi.testis+( ec.out+tom.cut+y.n)
orchiopexy ; orchi.testis+o+pex.peg+y.n
orchitis ; orch.testis+itis.inflammation