| Acronym | Meaning |
| GIPOF | Graded-Index Plastic Optical Fiber |
| MCR | Multivariate Curve Resolution |
| RITZ | Regulatory And Investigative Treatment Zone |
| HALOE | Halogen Occultation Experiment |
| MIOSA | Modified (rotational) Infinite Order Sudden Approxn. |
| DTR | Diffusion Transfer Reversal |
| B3LYP | A Density Functional Method Due To Lee |
| GDMS | Glow Discharge Mass Spectrometry |
| GCOS | Global Climate Observing System (WMO |
| WHMO | Wolfsberg-Helmholz Molecular Orbital |