| Acronym | Meaning |
| IEPA | Illinois Environmental Protection Agency |
| EAF | Electric Arc Furnace |
| TIC | Total Inorganic Carbon |
| FFPC | Forced-flow Planar Chromatog. |
| QLGM | Quantum Lattice Gas Model (in Helium Superfluid Transition Temperature In Zeolite Pores) |
| HDF | Hubble Deep Field |
| GVB-PP | Generalized Valence Bond-perfect Pairing (wave Function) |
| PHS | Prostaglandin H Synthase |
| BSSE | Basis-set Superposition Error |
| FBA | Fluidized Bed Afterburner |