| Acronym | Meaning |
| RRP | Recurrent Respiratory Papillomatosis |
| AASPEM | Advanced Air-to-air System Performance Evaluation Model |
| MDO | Membership Driven Organisation |
| WIPP | [Nuclear] Waste Isolation Pilot Project |
| HBV | Hepatitis B Virus |
| SLE | Sierra Leone (ISO 3166 Trigram) |
| PGH | Pre-implantation Genetic Haplotyping |
| UIC | University Of Illinois At Chicago |
| HIRD | Hurd Of Interfaces Representing Depth (cf. HURD) |
| ASARS | Advanced Synthetic Aperture Radar System - Airborne Search And Rescue System |