| Acronym | Meaning |
| DFA | Discriminant Function Analysispar |
| BIXS | Beta-ray Induced X-ray Spectrometry |
| CH-CI | Core Hole Configuration Interaction |
| MWNT | Multiwall Nanotube |
| CHIRP | Core-hole Initiated Relaxation Process (in Ionic Crystals) |
| IKBS | Intelligent Knowledge Based Systems |
| HL | Mustard-Lewisite Mixture |
| SPOS | Solid Phase Organic Synthesis |
| CHEM | Chemical Collection Database (accessible Through OLS) |
| NDPD | National Data Processing Division |