| Acronym | Meaning |
| RARE | Retinoic Acid-response Element |
| MEHT | Modified Extended Hueckel Theory |
| NPD | Normal Photoelectron Diffraction |
| RDEQ | Reduced Dimensionality Exact Quantum (method For Reactive Scattering) |
| OSPARCOM | Oslo And Paris Commission [Environmental Regulations For The European Community] |
| MCPB | (4-(2-methyl-4-chlorophenoxy)butyric Acid |
| CISC | Configuration Interaction (with) Size-consistency (correction) |
| JPL | Jet Propulsion Laboratory |
| EQS | Environmental Quality Standard |
| CHP | Chemical Hygiene Plan |