| Acronym | Meaning |
| PWL | PieceWise Linear (describing A Mathematical Function) |
| WA | Walloon Language (ISO 639-1 Code) |
| H | Hecto |
| INA | Interlingua Language (ISO 639-2 Code) |
| MPAA | Motion Picture Association Of America |
| BHR | Bahrain (ISO 3166 Trigram) |
| USNZ | University Sport New Zealand |
| EE | Estonia (ISO 3166 Digram) -Electrical Engineering - Electrical Engineer |
| COO | Chief Operating Officer |
| LIFO | Last In |