| Acronym | Meaning |
| MARS | Multivariate Adaptive Regression Splines |
| GRACE | Gravity Recovery And Climate Experiment |
| P-T-T-D | Pressure-temperature-time-deformation Path (for Metamorphic Rocks) |
| AMLCD | Active Matrix Liquid Crystal Display |
| PE | Performance Evaluation |
| EFTEM | Energy-filtering Transmission Electron Microscopy |
| PBIRG | Pharmaceutical Business Intelligence And Research Gro |
| ICM | Institute For Crisis Management |
| MCCHF | Multiconfiguration Coupled Hartree-Fock |
| EMII | Enriched Mantle Component 2 (of S. R. Hart |