| Acronym | Meaning |
| RTT | Resonant Tunneling Transistor |
| DEIS | Draft Environmental Impact Statement |
| RMBPT | Relativistic Many-body Perturbation Theory |
| SRBC | Sheep Red Blood Cell |
| RAS | Reflection-absorption Spectroscopy |
| NSWMA | National Solid Wastes Management Association |
| MA | Malonic Acidpar |
| FUGH | FREEON Unitary Group Formulation (of Hartree-Fock Theory) |
| DGS | DiGeorge Syndrome |
| RSS | Residual Sum Of Squares |