Definitions
Radio waves with wavelengths used for long-distance broadcasting.
Word origin
The noun is derived from short (adjective) + wave (noun).
Used in a sentence
“Shortwaves are longer than microwaves.”
“[O]nly about half of solar radiation reaching the Earth's atmosphere reaches Earth's surface. The sum of shortwave and longwave radiation reaching Earth's surface is global radiation.”
“Many stations broadcast on shortwaves.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Long-distance radio band”9 letters
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