| MASER | microwave amplification by stimulated emission of radiation |
|---|---|
| MW | Mallory-Weiss [syndrome]; mean weight; megawatt; microwave; Minot-von Willebrand [syndrome]; molecul... |
| MWD | microwave diathermy; molecular weight distribution |
| HEIR | health effects of ionizing radiation; high-energy ionizing radiation |
| RO | radiation oncology; radiation output; ratio of; relative odds; renal osteodystrophy; reverse osmosis... |