| Acronym | Meaning |
 | PAR | Photosynthetically Active Radiation |
| ESDD | Earth Science Data Directory |
| TDL | Techniques Development Lab |
| EMF | Electromotive Force |
| APHA | American Public Health Association |
| HP | Horse Power |
| RAS | Royal Astronomical Society |
| ADV | Atmospheric Dump Valve |
| BPSG | Budget Planning And Systems Group |
| CDED | Core Dynamics And The Earth's Dynamo |
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