| Abbreviation | Definition |
|---|---|
| MO | Methyl Orange |
| MO | Micro-Organism |
| MO | MOnocyte |
| MOAC | Molecular Organization and Assembly in Cells |
| MOL | Manned Orbiting Laboratory |
| MOL | Molecular |
| MOMO | Multiple Observation Mimetic Organicus |
| MORNU | Medically ordered not used |
| MOSP | Major Outer Sheath Protein |
| MPDLS | McWhirter Professional Development Laboratory School |
| MPG | Mean Plasma Glucose |
| MPIR | Microbal Pathogenesis and Immune Response |
| MPL | Marine Physical Laboratory |
| MPML | Material Properties Measurement Laboratory |
| MPML | Materials Preparation and Measurement Laboratory |
| MPML | Microcellular Plastic Manufacturing Laboratory |
| MPML | Microcellular Plastics Manufacturing Laboratory |
| MPN | MyeloProliferative Neoplasm |
| MPPM | Microbial Permeability Profile Modification |
| MPRC | Mayo Proteomics Research Center |