| Acronym | Meaning |
| BBO | Beta-barium Borate |
| STOIIP | Stock Tank Oil Initially In Place |
| MORTI | Mesopause Oxygen Rotational Temp. Imager |
| SPOS | Single-particle Optical Sensing |
| BCSC | Buried Contact Solar Cell |
| CCGT | Closed Cycle Gas Turbine |
| RWA | Rotating Wave Approximation |
| M-PCILO | Modified PCILO |
| IGHAT | Integrated-gasification Humid-air Turbine [cycle] |
| RTE | Reversible Temper Embrittlement |