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[ahy-soh] /ˈaɪ soʊ/
noun, plural isos. Television Slang.
Origin of iso
by shortening; cf. -o Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for isos


International Organization for Standardization
Word Origin
Greek isos equal; often wrongly thought to be an abbreviation for International Standards Organization
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
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isos in Science
An organization, the International Organization for Standardization, that sets standards in many businesses and technologies, including computing and communications. The term ISO is not an abbreviation, but instead derives from the Greek word īsos, meaning equal.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for isos



Solitary confinement or isolation cells (Prison)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for isos


  1. in search of
  2. International Organization for Standardization (technically not an initialism-term is based on the prefix iso-, from the Greek isos, meaning “equal”)
  3. intraseasonal atmospheric oscillation
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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