| MRAP | alpha-2-macroglobulin; maximal resting anal pressure; mean right atrial pressure |
|---|---|
| MRVP | mean right ventricular pressure; methyl red, Voges-Proskauer [medium] |
| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
| ODA | right occipitoanterior [fetal position] [Lat. occipito-dextra anterior] |
| ODP | offspring of diabetic parents; right occipitoposterior [fetal position] [Lat. occipito-dextra poster... |