| Acronym | Meaning |
![](file.png) | IPS | Inverse Photoemission Spectroscopy |
![](file.png) | IPSC | Inhibitory Postsynaptic Current |
![](file.png) | IPSP | Inhibitory Postsynaptic Potential |
![](file.png) | IPT | Iterated Perturbation Theory |
![](file.png) | IPVD | Ionized Physical Vapor Deposition |
![](file.png) | IPWO | Interface Plane Wave Orbitals |
![](file.png) | IQG | Independent Quasigeminals |
![](file.png) | IR | Isoprene Rubber |
![](file.png) | IRA | Interim Response Actions |
![](file.png) | IRAK | Interleukin 1 Receptor-associated Kinase |
![](file.png) | IRAS | Infrared Astronomy Satellite |
![](file.png) | IRAS | Infrared Reflection Absorption Spectroscopy |
![](file.png) | IRAV | Intense Infrared Active Vibration |
![](file.png) | IRBIC | Infrared Beam Induced Current |
![](file.png) | IRBP | Interstitial Retinol-binding Protein |
![](file.png) | IRC | Information Resource Center |
![](file.png) | IRC | Intrinsic Reaction Coordinate |
![](file.png) | IRCWD | International Reference Center For Waste Disposal |
![](file.png) | IRDO | Intermediate Retention Of Differential Overlap |
![](file.png) | IRE | Interferon-responsive Element |
![](file.png) | IRE | Internal Reflection Element |
![](file.png) | IREB | Intense Relativistic Electron Beam |
![](file.png) | IRED | IR Emitting Diode |
![](file.png) | IRED | Ion Radiation-enhanced Diffusion |
![](file.png) | IRES | Infrared Emission Spectroscopy |
![](file.png) | IRES | Internal Ribosome Entry Site |
![](file.png) | IRF | Instrument Response Function |
![](file.png) | IRF | Interferon Regulatory Factor |
![](file.png) | IRFPA | IR Focal Plane Array |
![](file.png) | IRGA | Infrared Gas Analyzer |
![](file.png) | IRGCHAZ | Intercritically Reheated Grain-coarsened Heat-affected Zone |
![](file.png) | IRGL | Interagency Regulatory Liaison Group |
![](file.png) | IRI | Industrial Research Institute |
![](file.png) | IRI | Interfaculty Reactor Institute |
![](file.png) | IRI | International Reference Ionosphere |
![](file.png) | IRI | Immunoreactive Insulin |
![](file.png) | IRIM | Institute For Rare Isotope Measurements |
![](file.png) | IRIS | Incorporated Research Institutes For Seismology |
![](file.png) | IRIS | Imaging Of Radicals Interacting With Surfaces |
![](file.png) | IRIS | Infrared Interferometer Spectrometer |
![](file.png) | IRIS | Integrated Risk Information System |
![](file.png) | IRK | Insulin Receptor Kinase |
![](file.png) | IRLG | Interagency Regulatory Liaison Group |
![](file.png) | IRM | Information Resources Management |
![](file.png) | IRM | Initial Remedial Measure |
![](file.png) | IRM | Isothermal Remanent Magnetization |
![](file.png) | IRMA | Immunoradiometric Assay |
![](file.png) | IRMDR | Infrared Microwave Double Resonance |
![](file.png) | IRMM | Institute For Reference Materials And Measurements |
![](file.png) | IRMP | International Remote Monitoring Program |