| Acronym | Meaning |
| BDCT | Best Demonstrated Control Technology |
| ESCOMPTE | (Experience Sur Site Pour Contraindre Les Modeles De Pollution Atmospherique Et De Transport D'emissions) |
| BAP | Bioavailable Phosphorus |
| MTD | Maximum Tolerated Dose |
| QEEC | Quasimol. Extended Elementary Cell (for Electronic Structure Calcns. Of Crystals) |
| MCC | Microcrystalline Cellulose |
| OCTG | Oil Country Tubular Goods |
| MSAPC | Mobile Source Air Pollution Control |
| INQUA | International Association For Quaternary Research |
| TEIL | Two-electron Ionization Ladder (wave Function) |