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Definition of Fm
1. Noun. Modulation of the frequency of the (radio) carrier wave. 
2. Noun. A radioactive transuranic metallic element produced by bombarding plutonium with neutrons.
Medical Definition of Fm
1. Symbol for fermium. (05 Mar 2000)
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1. Noun. Modulation of the frequency of the (radio) carrier wave. 
1. Symbol for fermium. (05 Mar 2000)