| Acronym | Meaning |
| GDE | Gas Diffusion Electrode |
| MEDOC | Multipole Expansion Defined (on) One Center (a Wave Function In Calcns. On Atomic And Molecular Collisions) |
| CIRAC | Canadian Institute For Research In Atmospheric Chemistry |
| HIM | Hydroxy Interlayered Minerals (clay Minerals) |
| CARIBIC | Civil Aircraft For Remote Sensing And In Situ Measurements In Troposphere And Lower Stratosphere Based On The Instrumentation |
| APD | Azimuthal Photoelectron Diffraction |
| ECLSS | Environmental Control And Life Support System |
| MIS | Mobile Incineration System |
| IGF | Inert Gas Fusion |
| DWS | Drinking Water Standard |