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: Adjective Pence is a 61-year-old former Indiana governor, former member of Congress, an ex-radio host and an evangelical Christian. Arkansas Online, "Harris, Pence spar in virus's shadow," 8 Oct. 2020 Pence is a 61-year-old former Indiana governor and ex-radio host, an evangelical Christian known for his Midwestern charm and unwavering loyalty to Trump. Anchorage Daily News, "Pence, Harris spar over COVID-19 in vice presidential debate," 8 Oct. 2020 The vice president is a 61-year-old former Indiana governor and ex-radio host, an evangelical Christian known for his folksy charm and unwavering loyalty to Trump. Steve Peoples, chicagotribune.com, "Plexiglass goes up for Pence-Harris vice-presidential debate tonight," 7 Oct. 2020 Pence is a 61-year-old former Indiana governor and ex-radio host, an evangelical Christian known for his folksy charm and unwavering loyalty to Trump. Steve Peoples, Star Tribune, "Pandemic likely to dominate debate between Pence, Harris," 7 Oct. 2020 The vice president is a 61-year-old former Indiana governor and ex-radio host, an evangelical Christian known for his folksy charm and unwavering loyalty to Trump. The Associated Press, NOLA.com, "Vice presidential debate to unfold as Donald Trump recovers from coronavirus," 7 Oct. 2020 Recent Examples on the Web: Noun Activists have now launched a short wave radio station to reach the public and each other. Helen Regan, Rebecca Wright And Paula Hancocks, CNN, "They are hunted and in hiding but Myanmar's journalists continue to report the truth," 3 May 2021 What Cincinnati radio station helped launch the careers of Doris Day, Rosemary Clooney, Andy Williams, Ruth Lyons, Red Skelton and Fats Waller? 16. Jeff Suess, The Enquirer, "How well do you know Cincinnati history? Take the quiz," 2 May 2021 After the Civil Aeronautics Authority took over the Flat radio station, the Lotts moved to Anchorage. David Reamer, Anchorage Daily News, "Here’s how an airport cafe specializing in pie grew into the Anchorage institution known as Peggy’s Restaurant," 2 May 2021 In neighboring Mali, meanwhile, militant Islamic group Katiba Macina struck a deal in March with local farmers along the border with Mauritania, according to French radio station RFI. Shola Lawal, The Christian Science Monitor, "Talks with Sahel extremists: Taboo, or a path toward peace?," 29 Apr. 2021 After a stint at WDET-FM, Detroit’s public radio station, Thomas began working at WWJ and never left. Julie Hinds, Detroit Free Press, "WWJ-AM's Vickie Thomas reflects on 30 years as the voice of Detroit breaking news," 28 Apr. 2021 Santamaria, who still had businesses inside including the La Raza radio station, decided to move it to Richfield. Star Tribune, "LISC Twin Cities and partners deliver first of two riot-recovery funds," 24 Apr. 2021 Lina Shirzad is the acting managing director of a small radio station in Badakhshan, in Afghanistan’s restive north. New York Times, "Afghan Women Fear the Worst, Whether War or Peace Lies Ahead," 18 Apr. 2021 Donald’s attorney, Casey White, told a Pittsburgh radio station Friday that his client did not assault a man, and that there was video evidence and five witnesses so far to corroborate the story. Gary Klein Staff Writer, Los Angeles Times, "Assault victim’s attorney apologizes for mistaking assailant for Rams’ Aaron Donald," 16 Apr. 2021 Recent Examples on the Web: Verb According to Billboard, no other artist has ever seen their first two releases that have been properly promoted to radio open inside the uppermost tier on the tally, which means the teen star has made history right out of the gate. Hugh Mcintyre, Forbes, "Just Two Songs Into Her Career, Olivia Rodrigo Has Already Made Hot 100 History," 16 Apr. 2021 James Arvid, 18, put the guard in a headlock and held him down, but the guard still managed to radio for help. Gabrielle Russon, orlandosentinel.com, "The weird world of Disney: Some wild things happened in 2020 at the theme parks," 30 Dec. 2020 The officer was knocked unconscious, but his partner was able to radio in backup and take Okelola into custody, authorities said. William Lee, chicagotribune.com, "Prosecutor: Man dragged, critically hurt Chicago officer because license was suspended and he was afraid of going to jail," 25 Nov. 2020 Arvid put the guard in a headlock and held him down, but the guard still managed to radio for help, the report said. Gabrielle Russon, orlandosentinel.com, "Florida man charged with attacking Disney World guard at DinoLand U.S.A.," 16 Nov. 2020 After the driver sped away, Merrill was able to radio deputies for backup. Fox News, "Florida deputies save man about to jump off bridge after he almost runs over deputy, sheriff says," 17 Sep. 2020 Apolinar, a mother to a 6-year-old boy and former librarian, managed to radio for help and give medical help to her partner. Ashley Boucher, PEOPLE.com, "Los Angeles Sheriff's Deputy Released from Hospital But Has a 'Long Road Ahead' After Ambush Shooting," 16 Sep. 2020 The Sheriff’s Department released video of the incident and Los Angeles County Sheriff Alex Villanueva said the deputies, a 31-year-old female and a 24-year-old male, were shot multiple times but were able to radio for help. N'dea Yancey-bragg, USA TODAY, "Shooting suspect at large; $100K reward offered for information related to LA deputy ambush," 15 Sep. 2020 The deputies were shot while sitting in their patrol car at a Metro rail station and were able to radio for help, the sheriff said. CBS News, "2 California sheriff's deputies shot in apparent ambush on patrol car," 13 Sep. 2020

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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Learn More about radio

Statistics for radio

Cite this Entry

“Radio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radio. Accessed 7 May. 2021.

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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

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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