AM
17 ENTRIES FOUND:
Britannica Dictionary definition of AM
[noncount]
:
a system for sending radio signals in which the height of a radio wave is changed in order to send information in the form of sound
◊ AM is an abbreviation for amplitude modulation.
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compare fm
— AM
adjective-
listening to my favorite AM station [=a radio station that sends sound using AM]
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Is this station AM or FM?
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AM radios
