obtect...	concealed	olfact...	smelling	or...	mouth
obturat...	closed	oligo...	few	orbi...	circle
obtusi...	blunt	oliva ...	olive	orch...	testicle
occiden...	Western	omaso...	paunch	oriental	Eastern
occip...	back of head	oment...	fat skin	ornith...	bird
oct...	eight	omm...	eye	ortho...	straight
odont...	tooth	omo...	shoulder	os(ti)...	mouth
odor...	fragrant	omphalo...	navel	os(s/t)...	bone
...oecious	house of	onto...	existing	ostrac...	shell
oed...	swollen	oo...	egg	ot...	ear
oen...	wine	op(t)...	eye	ovi...	sheep
oesoph...	gullet	operculum...	little cover	ovo...	egg
officinal...	used in medicine	ophi...	snake	oxy...	sharp
...oid	l-ike	ophthalmo...	eye
olecran...	skull of elbow	opistho...	behind
oleo...	oily	opoter...	either