| Acronym | Meaning |
| PITA | Pain In The Ass |
| BOFH | Bastard Operator From Hell |
| BJT | Bipolar Junction Transistor |
| ISL | Iceland (ISO 3166 Trigram) |
| MSSA | Methicillin-susceptible Staphylococcus Aureus |
| CS | Caesium |
| HIV | Human Immunodeficiency Virus |
| IAU | International Association Of Universities - International Astronomical Union |
| POMDP | Partially Observable Markov Decision Process |
| LSVW | Light Support Vehicle |