| Acronym | Meaning |
| GSAS | Generalized Structure And Anal. Software |
| IPPP | Iterative Pariser-Parr-Pople Method |
| CRT | Continuously Regeneration Trap |
| MRD-CI | Multireference Double-excitation Configuration Interaction |
| DESPOT | Driven-equilibrium Single-pulse Observation Of T1 |
| CSWRCB | California State Water Resources Control Board |
| SAC | Spectral Absorption Coeff. |
| ICAM | Integrated Climate Assessment Model |
| SPLP | Synthetic Pptn. Leaching Procedure |
| PPMA | Parts Per Million Atomic |