Astronomy Abbreviations and Acronyms
- IFAInstitute for Astronomy
- IFAEInstituto De Fisica De Altas Energias
- IFASIrish Federation of Astronomical Societies
- IFCCInternational Federation of Clinical Chemists
- IFEAIntegrated Furnace Experiment Assembly
- IFFIdentifier Friend
- IFNIntegrated Flux Nebulae
- IFOIdentified Flying Object (see Also UFO)
- IFOVInstantaneous Field of View
- IFRInfrared
- IFSIntegral Fielf Spectroscopic
- IFTInitial Flight Test
- IFTInverse Fourier Transform
- IFUInterface Unit
- IFWGInterface Working Group
- IGIrregular Galaxy
- IGInter-Galactic
- IGInter-Galcctic
- IGIInteractive Graphics Interpreter
- IGMIntergalactic Medium
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