au·​dio | \ ˈȯ-dē-ˌō \

Definition of audio

 (Entry 1 of 3)

1 : of or relating to acoustic, mechanical, or electrical frequencies corresponding to normally audible sound waves which are of frequencies approximately from 15 to 20,000 hertz
2a : of or relating to sound or its reproduction and especially high-fidelity reproduction
b : relating to or used in the transmission or reception of sound — compare video
c : of, relating to, or utilizing recorded sound



Definition of audio (Entry 2 of 3)

1 : an audio signal broadly : sound entry 1
2 : the section of television or motion-picture equipment that deals with sound
3 : the transmission, reception, or reproduction of sound

Definition of audio- (Entry 3 of 3)

1 : hearing audiometer
2 : sound audiophile
3 : auditory and audiovisual

Examples of audio in a Sentence


The audio portion of the broadcast was fine but the picture was poor. They listened to an audio recording of the speech.


The picture was clear but the audio was very poor.
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Recent Examples on the Web: Adjective

The sleek and stylish earbuds were made in collaboration with the headphone brand Master & Dynamic, and marks the French fashion house's first stab at audio tech. Erica Gonzales, Harper's BAZAAR, "Miley Cyrus Is Already Wearing Those $995 Louis Vuitton Airpods," 1 Feb. 2019 Artists require a bevy of instruments and technology to create and mix songs, but at the center of it all is the digital audio workstation (DAW). Popular Mechanics, "Learn How to Produce Pro-Level Music for Under $30," 31 Jan. 2019 A few days ago, Louis Vuitton announced their very first piece of audio gear: wireless earbuds, made in four different colorways, that cost a whopping $995. Rachel Hahn, Vogue, "Lil Uzi Vert Has Fashion’s Hottest New Accessory (No, Not a Man Bag)," 25 Jan. 2019 The Berlin Wall Memorial’s documentation center was updated a few years ago with fresh exhibits, including audio accounts from escapees and guards, and a fascinating in-city hike that takes you along a former stretch of the wall. Rick Steves' Europe, The Seattle Times, "What’s new in Germany and the Low Countries for 2019," 23 Jan. 2019 The audio equipment, from Mid-America Sound Corp., cost $195,910. John Tuohy, Indianapolis Star, "Fishers jacks up sound and lights with $310,600 in upgrades at amphitheater," 18 Apr. 2018 Some of the men met up again on March 4 at B-Side, a retro Sacramento bar at 15th and S streets with audio equipment to match. Benjy Egel, sacbee, "As Tower Records grew, so did employees’ love for founder Russ Solomon | The Sacramento Bee," 10 Mar. 2018 At Shangri-La, runners supplied him and his crew with audio equipment, food, and anything else that would help them stay focused on music. Leor Galil, Chicago Reader, "Towkio is officially Chicago’s highest rapper," 28 Feb. 2018 In fact, IHS Markit estimates Apple spends $58 per HomePod unit on its audio equipment, including tweeters and microphones. Don Reisinger, Fortune, "Here's How Much Apple Pays to Build Its HomePod Smart Speaker," 15 Feb. 2018

Recent Examples on the Web: Noun

Director and co-writer Gustav Möller got the idea for The Guilty while watching YouTube videos of 911 calls—a dramatic audio experience set to a single, claustrophobic visual focus. Sam Machkovech And Nathan Mattise, Ars Technica, "Films for the discerning nerd: Ars picks the best of 2018," 27 Dec. 2018 The arrival of the director suggests an effort by the U.S. intelligence community to assess the information the Turks have, including what Turkish officials have said is audio that captures the killing. John Hudson, The Seattle Times, "CIA director flies to Turkey amid growing controversy over Jamal Khashoggi killing," 23 Oct. 2018 The audio experience gets more impressive outside, where a subterranean subwoofer provides sonic power underneath our feet while blending into the landscape. Jenny Xie, Curbed, "Designing a smart home for seamless entertainment," 4 Sep. 2018 Also included was audio of another woman, speaking in Spanish, telling the youngsters not to speak to reporters. Thr Staff, The Hollywood Reporter, "Media Fight Access Restrictions on Child Detention Centers," 27 June 2018 Also included was audio of another woman, speaking in Spanish, telling the youngsters not to speak to reporters. Washington Post, "Media fight access restrictions on child detention centers," 26 June 2018 Police Chief Ramon Batista put the officers on leave after seeing the surveillance video, which has no audio. Steve Almasy, CNN, "Man punched by Mesa police says he wants justice," 8 June 2018 The audio-free surveillance footage shows Johnson standing against a wall, looking at his phone. Fox News, "The Latest: Pastor for beaten man questions police account," 7 June 2018 When an officer hits record, the camera automatically saves the prior 30 seconds of video — but there's no audio with it. Ashley Luthern, Milwaukee Journal Sentinel, "What you need to know about Milwaukee police body cameras," 23 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'audio.' 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 audio


1907, in the meaning defined at sense 1


1926, in the meaning defined at sense 1

History and Etymology for audio


independent use of audio- as adjective


derivative of audio entry 1, or by shortening of words formed with audio- (as audio-signal)

Combining form

Latin audīre "to hear" + -o- — more at audible entry 1

Note: Probably first in audiometer—see etymology note there.

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Dictionary Entries near audio








Statistics for audio

Last Updated

10 Feb 2019

Look-up Popularity

Time Traveler for audio

The first known use of audio was in 1907

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More Definitions for audio



English Language Learners Definition of audio

 (Entry 1 of 3)

: of or relating to the sound that is heard on a recording or broadcast



English Language Learners Definition of audio (Entry 2 of 3)

: the sound that is heard on a recording or broadcast

English Language Learners Definition of audio- (Entry 3 of 3)

: relating to hearing or sound


au·​dio | \ ˈȯ-dē-ˌō \

Kids Definition of audio

 (Entry 1 of 2)

1 : of or relating to sound or its reproduction
2 : relating to or used in the transmitting or receiving of sound (as in radio or television)



Kids Definition of audio (Entry 2 of 2)

1 : the transmitting, receiving, or reproducing of sound
2 : the section of television equipment that deals with sound

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More from Merriam-Webster on audio

Rhyming Dictionary: Words that rhyme with audio

Spanish Central: Translation of audio

Nglish: Translation of audio for Spanish Speakers

Britannica English: Translation of audio for Arabic Speakers

Comments on audio

What made you want to look up audio? Please tell us where you read or heard it (including the quote, if possible).


a servile follower or underling

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