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 Not even the local gospel station played over the radio. Leah Johnson, Harper's BAZAAR, "After I Came Out, My Mother Left Our Church to Fight for Queer Youth," 10 Feb. 2021 Sharp-eyed Marvel fans will spot the allusions to Hydra in the commercial breaks or notice the voice of Randall Park’s character from Ant-Man playing over the radio trying to communicate with Wanda. Eliana Dockterman, Time, "Wandavision Offers Hope That Originality Can Survive the Era of the Ever-Expanding Franchise," 16 Jan. 2021 An officer at the scene immediately radioed for help, the sound of gunfire crackling over the police radio. Arkansas Online, "Minneapolis on edge after fatal police shots," 2 Jan. 2021 An officer at the scene immediately radioed for help, the sound of gunfire crackling over the police radio. Washington Post, "Fatal shooting by police sets off protest in Minneapolis," 31 Dec. 2020 The repeat-worthy track, that was all over the radio, should set Harlow up for an even bigger 2021. Troy L. Smith, cleveland, "Cardi B and Megan Thee Stallion’s ‘WAP’ is the undisputed song of 2020," 6 Dec. 2020 Naiem Asadi was already in his attack helicopter over Kabul when the call blared over the radio: Militants were raining down mortars near the presidential compound, and someone needed to find them. Alex Horton, Anchorage Daily News, "Legendary Afghan air force pilot in hiding after U.S. reverses decision to help him flee Taliban," 3 Dec. 2020 Any car radio within roughly 200 feet can tune in Monday through Saturday from 8 a.m. to 7 p.m. Author: J. Besl, Anchorage Daily News, "Anchorage has a new radio station just for people waiting in cars for a coronavirus test," 5 Feb. 2021 On Thursday, scores of Lukodi residents gathered around a portable radio to follow the proceedings in The Hague. Mike Corder, Star Tribune, "ICC convicts Ugandan rebel commander of war crimes," 4 Feb. 2021 Recent Examples on the Web: Verb 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 Instead, if a child looks ill, the driver is to radio to the school and ask for additional screening upon arrival. Valerie Bauerlein, WSJ, "Think Reopening Schools Is Tough, What About School Buses?," 7 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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Statistics for radio

Cite this Entry

“Radio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radio. Accessed 25 Feb. 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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