[ ster-ee-oh, steer- ]
/ ˈstɛr iˌoʊ, ˈstɪər- /

noun, plural ster·e·os.


pertaining to stereophonic sound, stereoscopic photography, etc.

verb (used with object)

Printing. stereotype(def 5).

Origin of stereo

First recorded in 1815–25; by shortening

Definition for stereo (2 of 3)

Definition for stereo (3 of 3)


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 especially before a vowel, stere-.

Origin of stereo-

From the Greek word stereós Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for stereo

British Dictionary definitions for stereo (1 of 2)

/ (ˈstɛrɪəʊ, ˈstɪər-) /


noun plural stereos

stereophonic soundto broadcast in stereo
a stereophonic record player, tape recorder, etc
  1. stereoscopic photography
  2. a stereoscopic photograph
printing short for stereotype

Word Origin for stereo

C20: shortened form

British Dictionary definitions for stereo (2 of 2)


sometimes before a vowel stere-

combining form

indicating three-dimensional quality or soliditystereoscope

Word Origin for stereo-

from Greek stereos solid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for stereo



Solid; solid body:stereotropism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.