| Acronym | Meaning |
| CL | Chile (ISO 3166 Digram) -Co-ordination Line - One Hundred And Fifty (in Roman Numerals) |
| PLD | Probable Line Of Deployment |
| BWC | Biological And Toxin Weapons Convention |
| QC | Quality Control -Qu?bec (postal Symbol) -Queen's Counsel |
| C2IS OR C?IS | Command And Control Information System |
| FSSP | Families Of Structurally Similar Proteins |
| GRC | Greece (ISO 3166 Trigram) |
| MRO | Maintenance |
| DST | Daylight Saving Time |
| LSL | Lesotho Loti (ISO 4217 Currency Code) |