| Acronym | Meaning |
| DCPBH | Double-channel Planar Buried Heterostructure |
| KCS | K-matrix Centrifugal Sudden (in Mol.-scattering Theory) |
| TSDIA | Two-scale Direct-interaction Approximation [in Flow Energy Modeling] |
| SOM | Soil Organic Matter |
| NIHHS | Notification Of Installations Handling Hazardous Substances Regulations (UK) |
| FEFA | Fiber-optic Evanescent Field Absorption |
| RAP | Remedial Action Project Or Plan |
| PBIRG | Pharmaceutical Business Intelligence And Research Gro |
| CHP | Chemical Hygiene Plan |
| SCM | Shell-correction Method (in Calcns. For Metal Clusters) |