| Acronym | Meaning |
| MAAC | Maximum Ambient Air Concentration |
| SPEAR | Stanford Positron Electron Accelerating Ring |
| CPV | Cytoplasmic Polyhedrosis Virus |
| MLE | Molecular Layer Epitaxy |
| ISAS | Japanese Institute Of Space And Astronomical Science |
| AESOP | Ab-initio Effective Spin-orbit Operator |
| NGCC | Natural Gas Combined Cycle |
| DPD | Diethyl-p-phenylenediamine (test For Chlorine In Water) [93-05-0] |
| OEH | One-electron Hamiltonian (quantum Method) |
| SPCC | System Performance Check Compound |