| Acronym | Meaning |
| NABCI | North American Bird Conservation Initiative (nab-see) |
| PWLC | PieceWise Linear And Concave/Convex (describing A Mathematical Function) |
| OHC | OverHead-Cam Engine |
| LKA | Sri Lanka (ISO 3166 Trigram) |
| SFU | Simon Fraser University (Canada) |
| EM | ElectroMagnetism/ElectroMagnetic |
| JA | Japan (FIPS 10-4 Country Code) |
| WWV | Wagner-Werk-Verzeichnis (catalog Of The Works Of Richard Wagner |
| ITA | Italy (ISO 3166 Trigram) |
| NARDIC | U.S. Navy Acquisition Research And Development Information Center |