radio

adjective
ra·​dio | \ ˈrā-dē-ˌō How to pronounce radio (audio) \

Definition of radio

 (Entry 1 of 4)

1 : of, relating to, or operated by radiant energy
2 : of or relating to electric currents or phenomena (such as electromagnetic radiation) of frequencies between about 3000 hertz and 300 gigahertz
3a : of, relating to, or used in radio or a radio set
b : specializing in radio or associated with the radio industry
c(1) : transmitted by radio
(2) : making or participating in radio broadcasts
d : controlled or directed by radio

radio

noun
plural radios

Definition of radio (Entry 2 of 4)

1a : the wireless transmission and reception of electric impulses or signals by means of electromagnetic waves
b : the use of these waves for the wireless transmission of electric impulses into which sound is converted
2 : a radio message
3 : a radio receiving set
4a : a radio transmitting station
b : a radio broadcasting organization
c : the radio broadcasting industry
d : communication by radio

radio

verb
radioed; radioing; radios

Definition of radio (Entry 3 of 4)

transitive verb

1 : to send or communicate by radio
2 : to send a radio message to

intransitive verb

: to send or communicate something by radio

Definition of radio- (Entry 4 of 4)

— see radi-

Examples of radio in a Sentence

Noun

The news was sent by radio. I listen to the radio all the time. I heard the news on the radio. There's a problem with the car's radio. The radio was playing very loudly. The pilot's radio wasn't working.

Verb

The police radioed for backup. The stranded sailors were radioing for help. The pilot radioed in to the control tower. The police radioed a report back to the station. They radioed the Coast Guard for help.
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Recent Examples on the Web: Noun

Even as Israeli forces were advancing across the Sinai peninsula, Egypt’s Voice of the Arab radio station, listened to across the region, continued to boast of Israel’s imminent rout. Ursula Lindsey, The New York Review of Books, "Coup de Théâtre," 17 June 2019 Tickets to the movie premiere are being distributed in on-air contests held by Q93, B97 and FM 98 radio stations. Doug Maccash, nola.com, "Master P plans celebrity basketball game and movie premiere during Essence Fest," 13 June 2019 His radio program Better Lawns & Gardens is broadcast over twenty Florida stations. Tom Maccubbin, orlandosentinel.com, "What’s that plant?," 12 June 2019 On Tuesday June 18 at the Old Trafford cricket ground in Manchester, 19,000 spectators will attend and millions more will watch and listen on TV and radio. Philippa Velija, Quartz India, "Why war-torn Afghanistan is now a darling of the cricketing world," 11 June 2019 In 1980, the radio station 98 Rock began promoting a new local singer named Tony Sciuto. Michael Gonzales, Longreads, "It’s Like That: The Makings of a Hip-Hop Writer," 10 June 2019 People would turn on the local radio station to know what was going on, even in the community. Bulletin Board, Twin Cities, "Sunday Bulletin Board: Like sands through the hourglass, these are the loads of our lives!," 9 June 2019 NWS Meteorologist Miguel Miller told local news radio station KNX-AM the 80-mile-long and 80-mile-wide blob was heading toward San Diego County from the San Gabriel Mountains. CBS News, "Swarm of ladybugs so large it registers on National Weather Service radar in California," 5 June 2019 The remaining 14 prisoners in solitary confinement will be baptized in July and the church is also planning on taking several thousand Bibles to supply the prison for individual and new inmates in a partnership with the local radio station, KCBI. Fox News, "Rival gang members risk their lives to get baptized together in Texas maximum-security prison," 5 June 2019

Recent Examples on the Web: Verb

The Nissan was spotted minutes later on the Dan Ryan, then an officer radioes about a crash at 79th and LaFayette. Madeline Buckley, chicagotribune.com, "Minister drives by crash scene, not knowing wife died there: 'She was a beautiful, sweet, loving woman'," 11 May 2018 Frightened of retaliatory airstrikes, the militants withdrew quickly, radioing congratulations to each other, according to intelligence reports cited by Gov. Gooni and U.S. officials. Michael M. Phillips, WSJ, "America’s Other Endless War: Battling al-Shabaab in Somalia," 17 Jan. 2019 Sevareid played a central role in introducing Americans to radio news, at the time a new form of reporting. Marvin Kalb, WSJ, "Five Best: Marvin Kalb on Memoirs of War Reporting," 11 Jan. 2019 Then there’s the design, which employs a stem much like Apple’s AirPods — that should help keep an uninterrupted connection by pushing the wireless radios further away from the listener’s ear. Vlad Savov, The Verge, "RHA’s TrueConnect buds look like a promising AirPods rival," 4 Oct. 2018 The wranglers could radio to each other, but otherwise our communications would be limited to yelling across the plain. Ella Riley-adams, Vogue, "I Ditched My Phone for a Montana Cattle Drive (and Finally Dealt With My Feelings)," 3 Oct. 2018 Their mission is to blow up a key transmitter so German forces can’t radio in a warning about the big attack. Bryan Bishop, The Verge, "Overlord is a gloriously entertaining piece of B-movie schlock," 9 Nov. 2018 He and another staffer secured themselves in a safe building and radioed zoo staff. Kevin Mcgill, The Seattle Times, "Sharp teeth: Jaguar may have bitten through steel cable," 17 July 2018 Miles radioed to warn others of the discovery, likely saving hundreds of lives, but was never heard from again, his sister said. Julia Terruso, Philly.com, "After Trump-Kim summit, Philly-area family asking 'What about my brother' could finally get an answer," 20 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radio.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of radio

Adjective

1887, in the meaning defined at sense 1

Noun

1903, in the meaning defined at sense 1a

Verb

1913, in the meaning defined at transitive sense 1

History and Etymology for radio

Noun and Adjective

short for radiotelegraphy

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Statistics for radio

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Time Traveler for radio

The first known use of radio was in 1887

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More Definitions for radio

radio

noun

English Language Learners Definition of radio

 (Entry 1 of 2)

: the system or process that is used for sending and receiving signals through the air without using wires
: programs that are broadcast by radio
: a device that is used to receive the signals that are broadcast by radio

radio

verb

English Language Learners Definition of radio (Entry 2 of 2)

: to send a message to someone by radio

radio

noun
ra·​dio | \ ˈrā-dē-ˌō How to pronounce radio (audio) \
plural radios

Kids Definition of radio

 (Entry 1 of 3)

1 : the process that is used for sending or receiving signals by means of electromagnetic waves without a connecting wire
2 : a device that receives signals sent by radio
3 : programs that are broadcast by radio
4 : a device used to both send and receive messages by radio
5 : the radio broadcasting industry

radio

adjective

Kids Definition of radio (Entry 2 of 3)

1 : of or relating to radio waves
2 : of, relating to, or used in radio broadcasting

radio

verb
radioed; radioing

Kids Definition of radio (Entry 3 of 3)

: to communicate or send a message to by radio

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More from Merriam-Webster on radio

Rhyming Dictionary: Words that rhyme with radio

Spanish Central: Translation of radio

Nglish: Translation of radio for Spanish Speakers

Britannica English: Translation of radio for Arabic Speakers

Britannica.com: Encyclopedia article about radio

Comments on radio

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