| Acronym | Meaning |
| ELLAP | Environmental Lead Laboratory Accreditation Program |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| CNDO LHP | Complete Neglect Of Differential Overlap Longet-Higgins-Pople |
| MQMAS | Multiple-quantum Magic-angle Spinning |
| CLIMAP | Climate Long-range Investigation Mapping And Prediction |
| APNEA | Active Passive Neutron Examination And Assay |
| ZRL | Zero Risk Level |
| DRAWS | Dipolar Recoupling With A Windowless Sequence |
| SO | Stieltjes Orbitals (for Mol. Photoionization Continua) |
| APES | Adiabatic Potential Energy Surface |