| Acronym | Meaning |
| CCD | Chemical Composition Distribution [of Polymers] |
| CWFMS | Combined Wavelength And Frequency Modulation Spectroscopy |
| GTSSP | Global Temperature And Salinity Pilot Program |
| ECLSS | Environmental Control And Life Support System |
| GWM | Groundwater Monitoring |
| BEEM | Ballistic Electron Emission Microscopy |
| VHDL | Very High Speed Integrated Circuits (VHSIC) Hardware Description Language |
| DSW | Dirac Scattered-wave (often As SCF-X(alpha)-DSW Method) |
| VOIE | Valence Orbital Ionization Energy |
| LCMVAO | Linear Combination Of Modified Valence Atomic Orbital |