| Acronym | Meaning |
| ITFW | Improved Thomas-Fermi-Weizaecker (model) |
| PERL | Passivated Emitter And Rear Locally Diffused (solar Cells) |
| CMS | Comprehensive Modeling System |
| BID | Buoyancy Induced Dispersion |
| MCDW | Matrix Continuum Distorted Wave |
| EERL | Eastern Environmental Research Laboratory |
| LASS | Laser-assisted Spark Spectroscopy |
| NWIS | Nuclear Weapons Identification System |
| CLU-IN | Clean-Up Information Bulletin Board System (formerly OSWER-BBS) |
| OHFS | Optimized Hartree-Fock-Slater |