| Acronym | Meaning |
| ACN | Airborne Communications Node - Australian Company Number (number Issued By The Australian Government As Registration Of A Limited Liability Company) |
| HHD | Humanitatum Doctor (Latin |
| RIAA | Recording Industry Association Of America |
| ZM | Zeptometre |
| G | Gram |
| T | Tera - Tesla - Tritium |
| TZ | Tanzania (ISO 3166 And FIPS 10-4 Country Code Digram) |
| CTSS | Compatible Time-Sharing System |
| LI | Fifty-one (in Roman Numerals) -Liberia (FIPS 10-4 Country Code) - Liechtenstein (ISO 3166 Digram) |
| APL | A Programming Language - Acute Promyeloid Leukaemia - Anti-Personnel Landmine - Applied Physics Laboratory (Johns Hopkins University) |