shortwave
Pronunciation:
noun
Definitions
An electromagnetic wave having a wavelength between approximately 10 and 100 meters, corresponding to frequencies between 3 and 30 MHz.
Example: Shortwaves are longer than microwaves.
(usually in plural) Any frequency in this range, especially when used in broadcasting.
Example: Many stations broadcast on shortwaves.
adjective
Definitions
(of radio waves) Having a wavelength of approximately 10 to 100 meters
(of radio equipment) Capable of transmitting or receiving signals at such a wavelength.