| Acronym | Meaning |
| RNRA | Resonant Nuclear Reaction Analysis |
| TCA | Total Constituent Analysis |
| RCR | Replication-competent Retrovirus |
| BRGM | Bureau Of Geol. And Mining Research (France) |
| BSH | Bile Salt Hydrolase |
| SCE | Self-consistent Energy (method In At. And Mol. Calcns. With An Einsteinian Relativistic Theory |
| AVE | All Valence Electron |
| FETI | Fire, Explosion And Toxicity Index |
| UCAR | University Corporation For Atmospheric Research |
| ESC | Embryonic Stem Cell |