| Acronym | Meaning |
| AFN | Afghani (ISO 4217 Currency Code) |
| RT | PCR -Real Time Polymerase Chain Reaction Or Reverse Transcriptase Polymerase Chain Reaction. Clarified With Real Time RT-PCR Or Reverse Transcriptase RT-PCR Where Appropriate. |
| RNPS | Radio Network Planning System |
| SSTO | Single-Stage To Orbit |
| JT | Johnston Atoll (ISO 3166 Digram; Obsolete 1986) -Junior Technician (RAF) |
| Q2 | Second Quarter |
| LOTIS | Livermore Optical Transient Imaging System |
| ACB | Asociaci›n De Clubs De Baloncesto (Spanish For Association Of Basketball Clubs) |
| KW | Cornish Language (ISO 639-1 Code) |
| COEIA | Combined Operational Effectiveness And Investment Appraisal (military) |