| Acronym | Meaning |
 | PAL | Phase Alternating Line (TV Standard) -Philippine Airlines |
 | LONEOS | Lowell Observatory Near-Earth-Object Search |
 | PEN | Peruvian Sol (ISO 4217 Currency Code) -PolyEthylene Naphthalate |
 | SAG | Sango Language (ISO 639-2 Code) |
 | LI | Lithium |
 | ATC | Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948) |
 | USNS | United States Naval Ship |
 | COTS | Commercial Off The Shelf |
 | IWW | Industrial Workers Of The World |
 | RDDL | Resource Directory Description Language (riddle) |