| Acronym | Meaning |
| DVD | Digital Video Disk |
| ECF | Elemental Chlorine Free [as In Nonchlorine Bleaching] |
| WSM | Watershed Model |
| HEB | High Efficiency Boiler |
| PIRU | Public Information Reference Unit |
| RAA | Rigid-atom Approxn. (in Electronic Structure Calcns.) |
| ECSTM | Electrochemical Scanning Tunneling Microscopy |
| IBIC | Ion Beam Induced Charge |
| AWMA | Air And Waste Management Association |
| GTSSP | Global Temperature And Salinity Pilot Program |