AM

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AM /ˈeɪˌɛm/ noun
AM
/ˈeɪˌɛm/
noun
Learner's 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.
compare fm

— AM

adjective
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