Dictionary

fm

abbreviation

Definition of FM

fathom

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

Origin of FM

frequency modulation
First Known Use: 1940

2FM

abbreviation

Definition of FM

field manual

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May 30, 2015
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