| Acronym | Meaning |
| MAPW | Modified Augmented Plane Wave |
| CMS | Complete Model Space (in Many-body Calcns.) |
| IRM | Information Resources Management |
| ASM | Advanced Scavenging Model (for Air Pollution) |
| SMBR | Submerged Membrane Bioreactor |
| SDRAM | Synchronous Dynamic Random Access Memory |
| SOCMI | Synthetic Organic Chemical Manufacturing Industry |
| LECD | Lifetime Equivalent Constant Dose |
| IRI | Industrial Research Institute |
| CLP | Contract Laboratory Program |