| MPO | maximum power output; minimal perceptible odor; myeloperoxidase |
|---|---|
| MSCP | mean spherical candle power |
| PSD | particle size distribution; peptone, starch, and dextrose; periodic synchronous discharge; phase-sen... |
| scp | spherical candle power |
| UPS | ultraviolet photoelectron spectroscopy; uninterruptible power supply; uroporphyrinogen synthetase; u... |