stereo

1 of 2

noun

ste·​reo ˈster-ē-ˌō How to pronounce stereo (audio)
ˈstir-
plural stereos
1
2
[by shortening]
a
: stereophonic reproduction
b
: a stereophonic sound system

stereo

2 of 2

adjective

1
b
: produced by or as if by means of a stereotype
2

Examples of stereo in a Sentence

Recent Examples on the Web
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Noun
Other features include audio zoom, slow-motion recording in 1080p at 120fps or 240fps, time-lapse, and stereo audio capture. PC Magazine, 15 Oct. 2025 Imagine if, instead of turning left at a stop light, a robotaxi decided to blast the stereo and start doing figure eights. Saahil Desai, The Atlantic, 2 Oct. 2025
Adjective
The Air does not support stereo recording or audio-zoom, either. PC Magazine, 18 Oct. 2025 Run one speaker for mono sound, or pair two together for stereo. Chris Haslam Jeremy White, Wired News, 1 Oct. 2025 See All Example Sentences for stereo

Word History

First Known Use

Noun

circa 1823, in the meaning defined at sense 1

Adjective

1876, in the meaning defined at sense 1a

Time Traveler
The first known use of stereo was circa 1823

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Cite this Entry

“Stereo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stereo. Accessed 29 Oct. 2025.

Kids Definition

stereo

1 of 2 noun
ste·​reo ˈster-ē-ˌō How to pronounce stereo (audio)
ˈstir-
1
: stereophonic reproduction
2
: a stereophonic sound system

stereo

2 of 2 adjective
1
: of or relating to the seeing of objects in three dimensions
2

More from Merriam-Webster on stereo

Last Updated: - Updated example sentences
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