| Acronym | Meaning |
| RZM | Root Zone Method (of Wastewater Treatment) |
| TBW | Total Body Water |
| ATD | Atmospheric Technology Division |
| AEERL | Air And Energy Engineering Research Laboratory (US EPA) |
| RSMR | Rayleigh Scattering Of Moessbauer Radiation |
| IGP | Intergranular Penetration |
| NEDB | National Exposure Database (HSE) |
| CVL | Copper Vapor Laser |
| HER | Human Estrogen Receptorpar |
| PEMFC | Proton Exchange Membrane Fuel Cell |