(pharmacology) a monoclonal antibody that targets bone

(non-productive) Against; facing; a combining prefix found in verbs of Latin origin.

(sports) Abbreviation of Owen Sound.

Abbreviation of outsize (clothes for large people) / Abbreviation of oversize.

(UK) an Ordnance Survey map. / (software) Initialism of operating system. / Abbreviation of ordinary seaman.

(rare) Alternative form of o's.

Abbreviation of Old Saxon.

(anatomy) Synonym of bone.

(anatomy) An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).

An osar or esker.