| Acronym | Meaning |
| HEB | Hebrew Language (ISO 639-2 Code) |
| NISER | National Institute Of Science Education And Research |
| ATAC | Air Transportable Acoustic Communications |
| DART | Disaster Assistance Response Team - Dublin Area Rapid Transit |
| GLBA | Gramm-Leach-Bliley Act |
| AFRRI | (U.S.) Armed Forces Radiobiology Research Institute |
| OPTAR | Operational Target |
| AJ | Attojoule |
| PDA | Personal Digital Assistant - Predicted Drift Angle - Public Display Of Affection - Push-Down Automaton |
| UNCSGN | United Nations Conference On The Standardization Of Geographical Names |