| Acronym | Meaning |
 | PEI | Prince Edward Island - PolyEtherImide |
| IDN | Indonesia (ISO 3166 Trigram) |
| CWC | Chemical Weapons Convention |
| PLAID | Precision Location And Identification |
| HIH | His (or Her) Imperial Highness |
| KRW | South Korean Won (ISO 4217 Currency Code) |
| HV | Upper Volta (ISO 3166 Digram; Obsolete 1984) |
| WVA | World Veterinary Association |
| GRC | Greece (ISO 3166 Trigram) |
| ANM | Acoustic Noise Monitor |
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