| Acronym | Meaning |
| OPPTS | Office For Prevention |
| CART | Cocaine And Amphetamine Regulated Transcript |
| IUCHF | Improved Uncoupled Hartree Fock |
| APMI | American Powder Metallurgy Institute |
| CEMS | Conversion Electron Moessbauer Spectroscopy |
| SBCPA | Single-bond Coherent Potential Approximation |
| RISA | Radioimmunosorbent Assay |
| HRSG | Heat Recovery Steam Generator |
| BSC | Bundle Sheath Cellpar |
| ERCC | Excision Repair Cross-complementing |