| Acronym | Meaning |
| NAPBN | National Air Pollution Background Network |
| VPC | Vapor-phase Chromatography |
| CATA | Computer-aided Thermal Anal. |
| CD-SCSAG | Centrifugal Dominant-small Curvature Semiclassical Adiabatic Ground State (tunneling Approxn.) |
| ATES | Aquifer Thermal Energy Storage |
| PIES | Partial Integration Exterior Scaling (in Calcns. On Resonance Positions And Lifetimes |
| EPC | Evaporative Pattern Casting |
| MIA | Multiplicative Integral Approxn. (in 2-electron Integral Calcn.) |
| TKN | Total Kjeldahl Nitrogen |
| HAT | Histone Acetyltransferase |