RF

• Audio (AU)

  (file)

Various etymologies.

RF (countable and uncountable, plural RFs)

1. Initialism of right foot.
2. (photography) Initialism of range finder.
3. (electronics, physics) Initialism of radio frequency.
4. (pathology) Initialism of rheumatoid factor.
5. (military, engineering, slang) Initialism of ratfuck (“dirty rick or act of sabotage or interference”).
   • 1997, Chuck Carlock, Firebirds: A Harrowing Firsthand Account of Helicopter Combat in Vietnam, Bantam, →ISBN, page 300:

     If battalion staff were involved, we generally called the insertion an RF, Romeo Foxtrot, or Rat Fuck.

   • 2003, Guy T. Saperstein, Civil Warrior: Memoirs of a Civil Rights Attorney:

     Thinking they actually were supporting the demonstrators, I went up to them and asked why. “No, we're not supporting them. This is just an RF (short for “Rat Fuck”). We're keeping the money," they told me, laughing.

6. (baseball) Initialism of right field or right fielder.
7. (optics, imaging, photography) Abbreviation of radiance field.

RF

1. Initialism of Russian Federation.

• (electronics): HF, VHF, UHF, SHF, LF, VLF, ELF, LW, MW, SW

Combination of prefix F and prefix modifier R

RF

1. (US, military, aviation) reconnaissance fighter; an unarmed fighter modified for photo-reconnaissance (prefix)

• RF-111C
• RF-100A
• RF-4E

• FB, F/A
• QF, YF, XF
• RB, RA, RQ
• TR, SR

• F&R, Fr., Fr⁺⁶, fr

RF

1. RF (“radiofrequency”) Initialism of radiofréquence.