| Acronym | Meaning |
| HESSI | High Energy Solar Spectroscopic Imager |
| AAU | Amendment To Allege Use |
| FBG | Fiber Bragg Grating |
| MR-MBPT | Multireference-many-body Perturbation Theory |
| DCTP | Direct-current Tast Polarography |
| IDA | Interdigitated Array (microelectrodes) |
| HHW | Household Hazardous Waste |
| SANDS | Stratospheric Aitken Nuclei Detection System |
| PDVB | Poly(divinyl Benzene) |
| PEPECO | Photoelectron-photoelectron Coincidence |