| Acronym | Meaning |
| LOTIS | Livermore Optical Transient Imaging System |
| IAU | International Association Of Universities - International Astronomical Union |
| MOE | Measure Of Effectiveness |
| RHU | Replacement Holding Unit |
| NCP | Net Contracted Purchases |
| GWAS | Grand Western Archery Society |
| LLGC | Llyfrgell Genedlaethol Cymru (National Library Of Wales) - London Lesbian And Gay Centre |
| TA | Target Acquisition - Teaching Assistant -Tera-ampere -Territorial Army (UK) -Tristan Da Cunha (ISO 3166 Digram) |
| CLIC | Compact LInear Collider |
| SSRI | Selective Serotonin Reuptake Inhibitor - Social Systems Research Institute |