| Acronym | Meaning |
| PA | Pascal - Protactinium |
| MW | Milliwatt |
| PITA | Pain In The Ass |
| KHM | Cambodia (ISO 3166 Trigram) |
| PEST | UK Public Engagement With Science And Technology |
| GS | General Support -Gigasiemens - South Georgia And The South Sandwich Islands (ISO 3166 Digram) |
| CBOL | Consortium For The Barcode Of Life |
| INC | Iglesia Ni Cristo (Filipino |
| E.G. | Exampla Gratia (Latin |
| CM | Cameroun (FIPS 10-4 Country Code; ISO 3166 Digram) -Cruise Missile -Nine Hundred (in Roman Numerals) |