| Acronym | Meaning |
| IRIM | Institute For Rare Isotope Measurements |
| WORM | Write Once Read Many |
| RCCSD | (spin) Restricted CCSD |
| NYSAS | New York Summer Aerosol Study |
| CLE | Competitive Ligand Exchange |
| MONOS | Metal Oxide Nitride Oxide Semiconductor |
| DHCP | Double Hexagonal Close Packedpar |
| SCM | Self-consistent Multipolar (method In Metal Cluster Calcns.) |
| TCSM | Tropospheric Chemistry Systems Model |
| STAD | Simple Town Air Dispersion Model (of Air Pollution) |