| Acronym | Meaning |
| MPE | Multiphoton Excitation |
| LCTAO | Linear Combination Of Traveling Atomic Orbitals |
| RXTE | Rossi X-ray Timing Explorer |
| WPCP | Water Pollution Control Plant |
| WOUDC | World Ozone And UV Data Center |
| RASSCF | Restricted Active Space SCF |
| AIDJEX | Arctic Ice Dynamics Joint Experiment |
| MAWP | Maximum Allowable Working Pressure |
| FIRST | Far Infrared And Submillimetre Space Telescope |
| OPAL | Optical Pumping Absorption Lidar |