stereo

UK: /ˈstɛriəʊ/ US: /ˈstɛriˌoʊ, ˈstɪr-/ ,(ster′ē ō′, stēr′-)

Inflections of 'stereo' (n): npl: stereos

WordReference Random House Learner's Dictionary of American English © 2025

ster•e•o /ˈstɛriˌoʊ, ˈstɪr-/   n., pl. ster•e•os, adj. 
n. 

1. Sound Reproduction [countable] a system or piece of equipment for producing sound that comes out of two places, as from different speakers.
2. Sound Reproduction the producing of this kind of sound;
   the sound itself:
   [uncountable] The music sounds so much better in stereo.

adj. 

3. Sound Reproduction, Photography of or relating to such a sound or sound system:
   an expensive and powerful stereo system.

WordReference Random House Unabridged Dictionary of American English © 2025

ster•e•o  (ster′ē ō′, stēr′-), n., pl. ster•e•os, adj., v. 
n. 

1. stereoscopic photography.
2. a stereoscopic photograph.
3. Sound Reproduction stereophonic sound reproduction.
4. Sound Reproduction a system or the equipment for reproducing stereophonic sound.
5. Printing stereotype (defs. 1, 2).

adj. 

6. Sound Reproduction, Photography pertaining to stereophonic sound, stereoscopic photography, etc.

v.t. 

7. Printing stereotype (def. 5).

• by shortening 1815–25

stereo-, 

1. a combining form borrowed from Greek, where it meant "solid'', used with reference to hardness, solidity, three-dimensionality in the formation of compound words:
   stereochemistry;
   stereogram;
   stereoscope.

Also,[esp. before a vowel,] stere-. 

• Greek stereós

stereo., 

1. Printing stereotype.

Collins Concise English Dictionary © HarperCollins Publishers::

stereo / ˈstɛrɪəʊ ˈstɪər-/ adjective

1. short for stereophonic, stereoscopic

noun (stereos)

1. stereophonic sound: to broadcast in stereo
2. a stereophonic record player, tape recorder, etc
3. stereoscopic photography
4. a stereoscopic photograph
5. short for stereotype

Etymology: 20th Century: shortened form

Collins Concise English Dictionary © HarperCollins Publishers::

stereo-, (sometimes before a vowel)stere- combining_form

1. indicating three-dimensional quality or solidity: stereoscope

Etymology: from Greek stereos solid