| Acronym | Meaning |
| OTC | Open Tubular Column |
| ASCA | Automatic Subject Citation Alert |
| WASP | Wiskott-Aldrich Syndrome Protein |
| MR-MP | Multireference Moeller-Plesset (perturbation Theory) |
| TWTA | Traveling Wave Tube Amplifier |
| TRPH | Total Recoverable Petroleum Hydrocarbons |
| DSIP | Delta-sleep Inducing Peptide |
| MSA | Mineralogical Society Of America |
| AMORS | Atomic Magnetooptic Resonance Spectroscopy |
| APW | Augmented Plane Wave |