| Acronym | Meaning |
 | TC | Toxicity Characteristic |
| CHMM | Certified Hazardous Materials Manager |
| GA | Genetic Algorithm |
| ACOP | Approved Code Of Practice (UK) |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| PPQ | Parts Per Quadrillion |
| PSI | Pounds Per Square Inch |
| UDWBA | Unitarized Disorted Wave Born Approxn. (for Scattering) |
| BMC | Bulk-molding Compound |
| OTIS | Oklahoma Telecommunications Interlibrary System |
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