| Acronym | Meaning |
| BHGM | Borehole Gravity Meter |
| MPI | Mass Psychogenic Illness (in Indoor Air Pollution) |
| TCR | Total Chlorine Residual |
| DBL | Diffusive Boundary Layer |
| ORPI | Off-resonance Proton Irradiation |
| BA + P | Best Atom + Polarization Function |
| EIC | Electrostatic Interaction Chromatography |
| OCTA | Oxidizing Capacity Of The Tropospheric Atmosphere |
| NICI | Negative Ion Chemical Ionization (mass Spectrometry) |
| ESCORT | Error Self-compensation Reached By Tau-scrambling |