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.
See More

Recent Examples on the Web: Adjective

In recent years, more health providers have been turning to telemedicine for adult mental-health services, offering remote, real-time video and audio appointments with a psychiatrist or counselor for patients who don’t have easy access to care. Laura Landro, WSJ, "The Psychiatrist Can See Your Child Now, Virtually," 8 Jan. 2019 This app offers different audio yoga and meditation sequences that are designed to start in bed and end with you on your feet. Alexa Tucker, SELF, "25 Best Workout and Fitness Apps to Stay Healthy in 2019," 1 Jan. 2019 Over in music and gaming gadgets, cassette tape sales had their best year since 2012, and audio companies are responding by bringing back retro cassette tape players. Dami Lee, The Verge, "The Verge 2018 tech report card: Gadgets," 30 Dec. 2018 The gig emporium has traditionally facilitated extremely utilitarian, identifiable demands — like, say, graphic design or audio transcription. Luke.winkie, Vox, "Inside Venezuela’s YouTube prank economy," 12 Dec. 2018 That rules out towering bookcases and racks of audio equipment. Al Kemp, The Seattle Times, "How I came to grips with a downsized Christmas," 12 Dec. 2018 The wardrobes, coupled with Irving Berlin’s score, make this film an audio-visual treat. Lilah Ramzi, Vogue, "13 Classic Christmas Movies That Millennials Should Definitely Watch," 6 Dec. 2018 Audible also offers free audio books and a free trial. Wired Staff, WIRED, "Our Favorite Gaming Headsets, Plus 10 Other Tech Deals," 30 June 2018 The study is timely, with sales of audio books booming. Mary Cadden, USA TODAY, "New study finds that audio books elicit stronger emotional response than movies, TV," 21 June 2018

Recent Examples on the Web: Noun

An audio recording of the incident posted online by The Jerusalem Post captures the drama of the incident. Kyle Mizokami, Popular Mechanics, "Cockpit Canopy Falls Off F-15 at 30,000 Feet, Pilot Lands the Damn Jet Anyway," 7 Jan. 2019 In the wake of the 41st President's death on November 30, the George Bush Presidential Library released an audio recording of Barbara reading one particularly touching letter. Kayla Keegan, Good Housekeeping, "Read George H.W. Bush's Heartbreaking Letter to the Daughter He Lost," 6 Dec. 2018 Jefferson Graham shows the many options for finding audio podcasts to listen to, from apps to connected speakers, TV and the car, on #TalkingTech. Jefferson Graham, USA TODAY, "Listen up! Take Talking Tech on the road with these daily podcasts," 12 July 2018 EarTrumpet Microsoft’s built-in Windows 10 audio management isn’t the best. Tom Warren, The Verge, "The 9 best apps for your new Windows PC," 27 Dec. 2018 But in recent years, Radio Diaries has grown into so much more, bringing to life a trove of archival audio as well as interviewing older people about past historical events. Ars Staff, Ars Technica, "A few of our favorite podcasts in 2018, from new to new-to-us," 23 Dec. 2018 Plus, a ham radio can be interfaced with a computer or tablet to send data, texts, images, or Morse code, which makes them even more valuable and versatile than other types of two-way radios that are only capable of transmitting audio. Timothy Dahl, Popular Mechanics, "How to Choose a Two-Way Radio," 10 Dec. 2018 Learn more about the book and listen to a special audio excerpt here. Rachel Epstein, Marie Claire, "#ReadWithMC Didn't Want 'The Proposal' to End," 3 Dec. 2018 An audio jack connects to your phone or mp3 player to play music, and a built-in recorder and voice distorter add to the fun. Bree Coven Foster, The Seattle Times, "5 tech gifts for under $50," 20 Nov. 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.

See More

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.

Keep scrolling for more

Learn More about audio

Dictionary Entries near audio








Statistics for audio

Last Updated

14 Jan 2019

Look-up Popularity

Time Traveler for audio

The first known use of audio was in 1907

See more words from the same year

Keep scrolling for more

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

Keep scrolling for more

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).


marked by shyness and lack of polish

Get Word of the Day daily email!

Test Your Vocabulary

Liar, Liar Quiz

  • alt-5761dbe2ba986
  • Someone who pretends to be sick in order to avoid work is a:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Syn City

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!