What does airwave mean?
An airwave is an electromagnetic wave used to carry radio and television signals through space. In practice, the word rarely appears alone: it lives almost entirely in its plural form, 'airwaves', which has come to mean the shared public medium of broadcasting itself. When journalists say a politician 'took to the airwaves' or that a message went out 'over the airwaves', they mean it was transmitted by radio or television to a wide audience. The term carries a distinctly journalistic register and often evokes the era when radio was the dominant mass medium, though it remains current in coverage of modern broadcasting and streaming regulation. Interestingly, the name is something of a misnomer: unlike sound waves, radio waves do not need air to travel and cross the vacuum of space effortlessly. Related terms include broadcast, transmission, and airplay.
nounA single wave of electromagnetic radiation used in radio or television transmission; the term is most often encountered in the plural 'airwaves', meaning the publicly accessible medium of broadcast communication.
- The public medium of radio and television broadcasting, almost always expressed as the plural 'airwaves' (e.g., 'over the airwaves').
- A single electromagnetic wave used in radio transmission (rare; usually only in technical contexts).
"The emergency broadcast went out over the airwaves within minutes of the storm making landfall."
"The comedian took to the airwaves to defend her controversial remarks."
"Regulators fined the station for flooding the airwaves with unlicensed transmissions."
The plural 'airwaves' is far more common than the singular and functions as a collective noun for the broadcasting medium as a whole.
"Her voice filled the airwaves every Sunday morning for a decade."
'Airwaves' is technically a misnomer — radio waves travel perfectly well through the vacuum of space, no air required.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of airwave
The word combines 'air', ultimately from the ancient Greek 'aēr' meaning the lower atmosphere, with 'wave', from Old English 'wafian', to move to and fro. It arose in the early twentieth century alongside radio technology, when broadcasters imagined signals traveling through the air much like sound does. Its cognates include other 'air'-rooted borrowings from Greek such as 'aerial', 'aerate', and 'aerobic'.
Related word forms
How airwave is actually used
The singular 'airwave' is rare and largely technical; everyday usage overwhelmingly favors the collective plural 'airwaves'. The word carries a slightly journalistic, broadcast-industry flavor and appears frequently in news reporting and media commentary.
Easily confused with airwave
An airway is a passage for air into the lungs (or a designated flight route), whereas an airwave is an electromagnetic wave used in broadcasting.