| Acronym | Meaning |
| SPIRIT | Single Photon Ionization Resonance Ionization To Threshold |
| LPEE | Liquid Phase Electroepitaxy |
| APB | Antiphase Boundary (crystal Chemistry) |
| IIA | Information Industry Association |
| NRRA | Nuclear Resonant Reaction Analysis |
| PANH | Polycyclic Aromatic Nitrogen Heterocycle |
| DSIP | Delta-sleep Inducing Peptide |
| MAGIC | Model Of Acidification Of Groundwater In Catchments |
| IRAV | Intense Infrared Active Vibration |
| HWRA | Hazardous Waste Reduction Act |