Astronomy Abbreviations and Acronyms

1. IFA
   Institute for Astronomy
2. IFAE
   Instituto De Fisica De Altas Energias
3. IFAS
   Irish Federation of Astronomical Societies
4. IFCC
   International Federation of Clinical Chemists
5. IFEA
   Integrated Furnace Experiment Assembly
6. IFF
   Identifier Friend
7. IFN
   Integrated Flux Nebulae
8. IFO
   Identified Flying Object (see Also UFO)
9. IFOV
   Instantaneous Field of View
10. IFR
    Infrared
11. IFS
    Integral Fielf Spectroscopic
12. IFT
    Initial Flight Test
13. IFT
    Inverse Fourier Transform
14. IFU
    Interface Unit
15. IFWG
    Interface Working Group
16. IG
    Irregular Galaxy
17. IG
    Inter-Galactic
18. IG
    Inter-Galcctic
19. IGI
    Interactive Graphics Interpreter
20. IGM
    Intergalactic Medium

Last updated: August 3, 2021 — Total entries: 5,937