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, 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, 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, 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, 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, 7 Oct. 2020 Recent Examples on the Web: Noun Last month, Nigeria banned Twitter from the country and ordered television and radio stations not to use the platform to gather information. NBC News, 14 July 2021 Johnson would go to become a successful commentator on television and radio. Los Angeles Times, 12 July 2021 Both former players have been soccer analysts with ESPN; from 2014 to 2020, Mr. Mariner was also a color commentator on the Revolution’s television and radio broadcasts. BostonGlobe.com, 12 July 2021 The public service announcement launched Tuesday will play on local television and radio stations and as an audio advertisement in grocery stores and doctors’ waiting rooms. Dallas News, 29 June 2021 Alex Bowman helplessly watched teammate Kyle Larson zip past him in the waning laps at Pocono and apologized to his crew over the radio for blowing the lead. Dan Gelston, ajc, 27 June 2021 Alex Bowman helplessly watched teammate Kyle Larson zip past him in the waning laps at Pocono and apologized to his crew over the radio for blowing the lead. Dan Gelston, Star Tribune, 26 June 2021 There are no private television or radio stations in Iran. Isabel Debre, chicagotribune.com, 22 June 2021 There are no private television or radio stations in Iran. CBS News, 22 June 2021 Recent Examples on the Web: Verb An officer who caught up to the intruder tried to radio for help, but couldn’t. Andy Meek, BGR, 11 May 2021 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, 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, 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, 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, 16 Nov. 2020 After the driver sped away, Merrill was able to radio deputies for backup. Fox News, 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, 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, 15 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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Cite this Entry

“Radio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radio. Accessed 23 Jul. 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

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

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