| Acronym | Meaning |
| PPDS | Physical Property Data Service |
| USN | Ultrasonic Nebulizer |
| NSDWR | National Secondary Drinking Water Regulations |
| PISCES | Passive In-Situ Concn. Extn. Sampler |
| IMO | International Maritime Organization |
| GLS | Generalized Least Squares |
| LIBD | Laser-induced Breakdown Detection |
| NSH | Normalized Spherical Harmonic (hamiltonian) |
| CSTL | Chemical Science And Technology Laboratory |
| CSIR | Chemistry Software And Information Resources |