| Acronym | Meaning |
| EGBUS | External Genitalia |
| ISBN | International Standard Book Number (ISO 2108) |
| URD | Urdu Language (ISO 639-2 Code) |
| SADL | Situation Awareness Data Link (saddle) - Structural Architecture Description Language |
| MEMS | Microelectromechanical System |
| FA | Femtoampere |
| BART | Bay Area Rapid Transit |
| AYBABTU | All Your Base Are Belong To Us |
| PN | Petanewton - Pitcairn Islands (ISO 3166 Digram) |
| PKI | Public Key Infrastructure (cryptography) |