| Acronym | Meaning |
| ELLPAT | Environmental Lead Laboratory Proficiency Analytical Testing |
| LATS | Long-Acting Thyroid Stimulator |
| AAO | Acetaldehyde Oxime |
| ACHMM | Academy Of Certified Hazardous Materials Managers |
| AOD | Argon Oxygen Decarburization |
| LCGTO-LDF | Linear Combination Of Gaussian-type Orbitals-local Density Functional |
| ACTS | Advanced Communications Technologies And Services |
| STAPPA | State And Territorial Air Pollution Program Administrators |
| ICF | Inertial Confinement Fusion |
| COCI | Committee On Chemistry And Industry (IUPAC) |