| Acronym | Meaning |
| CNAEL | Committee On National Accreditation Of Environmental Laboratories (US EPA) |
| STEP | Soil Treatment Evaluation Program |
| HRAP | High Rate Algal Pond |
| OHAO | Orthogonalized Hybrid Atomic Orbital |
| SERC | State Emergency Response Commission |
| HPM | Hole-potential Model (in Calcn. Of Mol. Excited States) |
| CAREIRS | Conversion And Renewable Energy Inquiry And Referral Service |
| AIPEA | Association Internationale Pour L'Etude Des Argiles |
| ACQM | Arrangement-channel Quantum Mechanics |
| FBR | Fast Breeder Reactor |