| Acronym | Meaning |
| MAPKK | Mitogen-activated Protein Kinase Kinase |
| DRFM | Digital Radio-frequency Memory |
| CBO | Crude Born-Oppenheimer (wave Functions) |
| LISA | Laser Interferometer Space Antenna |
| AQMP | Air Quality Management Plan |
| DRS | Diffuse Reflectance Spectroscopy |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| FCP | Function Counterpoise (method For Eliminating Basis Set Superposition Error) |
| CMBR | Completely Mixed Batch Reactor |
| GIRMS | Gas Isotope Ratio Mass Spectrometry |