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FM

1 ENTRIES FOUND:
FM /ˈɛfˌɛm/ noun
FM
/ˈɛfˌɛm/
noun
Learner's definition of FM
[noncount]
: 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调频
FM is an abbreviation of “frequency modulation.”*FM是frequency modulation的缩略词
compare am

— FM

adjective

fm

1 of 4

abbreviation (1)

fathom

Fm

2 of 4

symbol

fermium

FM

3 of 4

noun

often attributive
: a broadcasting system using frequency modulation
also : a radio receiver of such a system

FM

4 of 4

abbreviation (2)

field manual

Word History

Etymology

Noun

frequency modulation

First Known Use

Noun

1940, in the meaning defined above

Time Traveler
The first known use of fm was in 1940

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