| Acronym | Meaning |
| VCM | Variational Cellular Method (for Electronic Structure Calcns.) |
| CHEMTREC | Chemical Transportation Emergency Center |
| BGK | Bhatnagar-Gross-Krook (kinetic-theory Model For Reactive Collisions) |
| AMMRC | Army Materials And Mechanics Research Center |
| ADMI | American Dye Manufacturers Institute |
| XPD | X-ray Photoelectron Diffraction |
| ASGDI | Atmospheric Sampling Glow Discharge Ionization |
| URA | Universities Research Association |
| GDP | Gross Domestic Product |
| NBMO | Nonbonded Molecular Orbital |