| Acronym | Meaning |
| NAPBN | National Air Pollution Background Network |
| CRBP | Cellular Retinol Binding Protein |
| IPPP | Inner Projections (of The) Polarization Propagator (in Calcns. On Nuclear Spin Coupling) |
| STEM | Scaled Taylor Exponential Model |
| LITA | Laser-induced Thermal Acoustics |
| CCSD | Coupled Cluster With Single And Double Excitation |
| NPP | Net Primary Productivity |
| TVA | Tennessee Valley Authority |
| BIXS | Beta-ray Induced X-ray Spectrometry |
| HFCLM | Hollow Fiber Contained Liquid Membrane |