| Acronym | Meaning |
| FSIS | Food Safety And Inspection Service |
| LIS | Lightning Imaging Sensor |
| HSC | HAZMAT Spill Center |
| RPC | Reduced Potential Curve (method For Anal. Of Potential Functions And Spectra Of Diatomic Molecules) |
| S-MPPT | Supermolecular Moeller-Plesset Perturbation Theory |
| QUE | Quantized Universal Enveloping (algebras In Mol. Vibrational Spectra Calcns.) |
| APRIL | A Proliferation-inducing Ligand |
| TERRA | Tandem Accelerator For Environmental Research And Radiocarbon Analysis |
| PASTM | Photon Assisted Scanning Tunnel Microscopy |
| PFWM | Parametric Four-wave Mixing |