| Acronym | Meaning |
| OSA | Optical Society Of America |
| LPFG | Long-period Fiber Grating |
| DDRP | Direct Delayed Response Program (for Long Term Effects Of Acid Rain) |
| EP | Extraction Procedure |
| COD | Continuous Optical Discharge |
| GDA | Glow Discharge Atomization (for Atomic Absorption Spectrometry) |
| AUMP | Annihilated Unrestricted Moeller-Plesset (spin Contaminant) |
| ID | Isotope Dilution |
| ARUPS | Angle-resolved Ultraviolet Photoelectron Spectroscopy |
| ERDAS | Earth Resource Data Analysis System |