| Acronym | Meaning |
| NMOG | Non-Methane Organic Gases |
| HLAO | High-lying Antibonding Orbital |
| CCE | Charge Composition Explorer |
| FEWS | Fiber-optic Evanescent Wave Spectroscopy |
| MEE | Migration-enhanced Epitaxy |
| IDA | International Desalination Association |
| LAAFS | Laser Ablation Atomic Fluorescence Spectroscopy |
| HLBR | Required Hydrophilic-lipophilic Balance (of Surfactants In Emulsifiers) |
| PEM | Parametric Equations Of Motion |
| PSD | Passive Sampling Device(s) (for Air Pollution) |