| Acronym | Meaning |
| RDO | Reduced Density Operator |
| DC | Blood-air Distribution Coefficient |
| ECEC | Effective Cation Exchange Capacity |
| SOHIC | Stress-oriented Hydrogen-induced Cracking |
| TC-LIGS | Two-color Laser-induced Grating Spectroscopy |
| TDD | Telecommunications Device For The Deaf |
| DIIS | Direct Inversion In The Iterative Space |
| TWTA | Traveling Wave Tube Amplifier |
| CAAT | Johns Hopkins Center For Alternatives To Animal Testing |
| TEER | Transepithelial Electric Resistance |