| Acronym | Meaning |
| NARE | North Atlantic Regional Experiment |
| NPC | Nonparenchymal Cell |
| OPA | Optical Parametric Amplifier |
| CHF | Congestive Heart Failure |
| PRP | Platelet-rich Plasma |
| GIXS | Grazing Incidence X-ray Scattering |
| PIUS | Process Inherent Ultimate Safety |
| RMTA | Rigid Muffin-tin Approxn. |
| DIA | Drug Information Association |
| RIS | Rotational Isomeric State |