shortwave

/SH AO1 R T W EY1 V/

noun

1
An electromagnetic wave having a wavelength between approximately 10 and 100 meters, corresponding to frequencies between 3 and 30 MHz.
“Shortwaves are longer than microwaves.”
2
(usually in plural) Any frequency in this range, especially when used in broadcasting.
“Many stations broadcast on shortwaves.”

Synonyms

adjective

1
(of radio waves) Having a wavelength of approximately 10 to 100 meters
2
(of radio equipment) Capable of transmitting or receiving signals at such a wavelength.

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