| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
|---|---|
| OMAC | otitis media, acute catarrhal |
| OME | office of medical examiner; otitis media with effusions |
| OMPA | octamethyl pyrophosphoramide; otitis media, purulent, acute |
| OMPC, OMPCh | otitis media, purulent, chronic |