| Acronym | Meaning |
| HTML | Hypertext Markup Language |
| UTR | Untranslated Region |
| FEM | Field Emission Microscopy |
| GABA | Gamma-aminobutyric Acid |
| SWE | Snowpack Water Equivalent |
| DCA | Discriminant Component Anal. |
| IEM | Independent Electron Model (for Ionization In Ion-atom Collisions) |
| IUPPA | The International Union Of Air Pollution Prevention Associations |
| SESFOD | Selective Excitation With Single Frequency Off Resonance Decoupling |
| IHSS | International Humic Substances Society |