| Acronym | Meaning |
| PIRAS | Polarized Infrared Absorption Spectroscopy |
| HDVV | Heisenberg-Dirac-Van Vleck (Hamiltonian Or Exchange Parameter) |
| TSNIGRI | Research Center Of The Institute For Geol. Exploration Of Base And Precious Metals (Russia) |
| CCA | Copper Chromium Arsenic |
| PD | Photoelectron Diffraction |
| CHEMTREC | Chemical Transportation Emergency Center |
| AAIP | American Association Of Investigative Pathologists |
| DAEM | Distributed Activation Energy Model |
| DAP | Distributed Array Processor |
| PCA | Procoagulant Activity |