First Known Use: 1940
Dictionary
fm
abbreviation
Definition of FM
fathom
ADVERTISEMENT
Fm
symbol
Definition of FM
fermium
1FM
noun, often attributive \ˈef-ˌem\
: a system for sending radio signals in which the number of radio waves per second is changed in order to send information in the form of sound
Full Definition of FM
: a broadcasting system using frequency modulation; also : a radio receiver of such a system
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Origin of FM
frequency modulation
2FM
abbreviation
Definition of FM
field manual
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