| Acronym | Meaning |
| EIAH | Encyclopedia Of Iranian Architectural History |
| TRAC | (U.S. Army) TRADOC Analysis Center |
| INTSUM | Intelligence Summary |
| HIRD | Hurd Of Interfaces Representing Depth (cf. HURD) |
| BI | Bismuth |
| RHU | Replacement Holding Unit |
| PLN | Polish Zloty (ISO 4217 Currency Code) |
| YT | Mayotte (ISO 3166 Digram) - Yottatesla - Yukon Territory (postal Symbol) |
| CDD | Capabilities Development Document |
| NP | Nepal (ISO 3166 And FIPS 10-4 Country Code Digram) |