| Acronym | Meaning |
| NICA | Nonideal Competitive Adsorption |
| SCPA | Single-site Coherent-potential Approximation (for Electronic Structure Calcns.) |
| NLLAP | National Lead Laboratory Accreditation Program |
| HBVE | 4-hydroxybutyl Vinyl Etherpar |
| NAT | Nitric Acid Trihydrate (polar Stratosphere Cloud Aerosol) |
| FIM | Friable Insulation Material |
| EGSB | Expanded Granular Sludge Bed |
| CERPIES | Collision Energy Resolved Penning Ionization Electron Spectra |
| IMC | Intermetallic Matrix Composite |
| POCV | Pair Orthogonality Constrained Variation Method |