| Acronym | Meaning |
| RCP | Reciprocal Calcn. Procedure [of ACGIH] |
| CBD | Citrate-bicarbonate-dithionite (sample Treatment In Soil Analysis) |
| OPHF | Orbital-polarized Hartree-Fock |
| CETO | Cartesian Exponential Type Orbital |
| BDT | Brueckner (with) Double (and) Triple (substitutions) |
| TETS | Totally Enclosed Treatment Systems |
| HBT | Heterojunction Bipolar Transistor |
| DBS | Dibutyl Sebacate |
| MRA | Multiple Regression Analysis |
| MCC | Motor Control Center |