| Acronym | Meaning |
 | AOU | American Ornithologists' Union |
 | TAROT | T?lescope ? Action Rapide Pour Les Objets Transitoires (French |
 | LTI | Linear Time-Invariant |
 | Q4 | Fourth Quarter |
 | LEGAD | Legal Advice |
 | BGR | Bulgaria (ISO 3166 Trigram) |
 | VZW | Vereniging Zonder Winstoogmerk (Dutch Non-profit Organisation) |
 | TND | Tunisian Dinar (ISO 4217 Currency Code) |
 | DMCA | Digital Millennium Copyright Act |
 | RCA | Radio Corporation Of America - Root Cause Analysis - Royal Canadian Artillery - Royal City Avenue (famous Entertainment Zone In Thailand) |