| Acronym | Meaning |
 | ISSCR | International Society For Stem Cell Research |
| NDP | New Democratic Party (Canada) |
| ACA | Airspace Control Authority - Airspace Co-ordination Area - A Current Affair |
| PEO | ?…??????… ???…‡??? ???†???‰?… (Greek For Pancyprian Federation Of Labour) - Philanthropic Educational Organization - PolyEthylene Oxide - Professional Employer Organization - Professional Engineers Ontario |
| CL | Chlorine |
| ARA | Arabic Language (ISO 639-2 Code) |
| PRN | Pro Re Nata (Latin |
| DIS | Defence Intelligence Staff - (U.S.) Defense Investigative Service - Distributed Interactive Simulation - Draft International Standard (ISO) |
| SSP | Submarine Transport (retired US Navy Hull Classification) |
| NLL | National Lacrosse League |
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