fm

• POS: Noun

CIDE DICTIONARY

fm, prop. n. 

 the symbol for the element Fermium.  [PJC]

fm, n. [Frequency Modulaiton.].

 A method of transmitting radio signals by modulating the frequency of the carrier wave; -- opposed to AM (amplitude modulation), in which the signal modulates the amplitude, rather than the frequency of the carrier wave.  [WordNet 1.5]

fm, prop. n. 

 The chemical symbol for Fermium, a transuranic element.  [WordNet 1.5]

OXFORD DICTIONARY

fm, abbr.
1 Field Marshal.
2 frequency modulation.

fm, symb. Chem. the element fermium.