| Acronym | Meaning |
| IRAS | Infrared Astronomy Satellite |
| WAS | Waste Activated Sludge |
| IUCR | International Union Of Crystallography |
| ESCR | Environmental Stress Cracking Resistance |
| HECD | Hot Electron Capture Dissociation |
| CPCA | Consensus Principal Component Analysis |
| CCDPPA | Coupled-cluster With Double Excitation Polarization Propagator |
| CDD | Charge-density Distortion |
| PMT | Photomultiplier Tube |
| SSFDC | Solid-state Floppy-disk Card (SmartMedia) |