- overbold
- oedipus complex
- on no account
- ocular hypertelorism
- ointment finisher
- overemphasize
- overemphasise
- overstress
- one who likes tumultuousness
- os capitatum
- of good moral character or integrity
- one who is not sincere in one's dealings
- order to be retained
- overpoweringly
- overwhelmingly
- of keen intelligence perspicacious
- one who takes sides
- of all
- of all the
- one and all
- orthocephalic
- obliterans
- oligodendrolioma
- on tod
- on own
- organ anaphylaxis
- outcropping
- orthophoto
- ovoid section
- of sixty years
- overweeningness
- one who enjoys or suffers the result of a deed
- olivopontocerebellar atrophy
- orbitofrontal
- one who has accomplished his assignment
- one fourth of a pice
- occipital perpendicular
- office of the dead
- out of a hat
- once too often
- oralpoliomyelitis vaccine
- oral language
- occipitoatloid
- ovum forceps
- ovarian torsion
- ovarian tumour
- optical reduction
- on the face of it
- one_address instruction
- op. cit. (opere citato)