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ozone

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o⋅zone

  [oh-zohn, oh-zohn]
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–noun
a form of oxygen, O3, with a peculiar odor suggesting that of weak chlorine, produced when an electric spark or ultraviolet light is passed through air or oxygen. It is found in the atmosphere in minute quantities, esp. after a thunderstorm, is a powerful oxidizing agent, and is thus biologically corrosive. In the upper atmosphere, it absorbs ultraviolet rays, thereby preventing them from reaching the surface of the earth. It is used for bleaching, sterilizing water, etc.
Origin:
< G Ozon < Gk ózōn, prp. of ózein to smell; see ozo-

Related forms:
o⋅zon⋅ic  [oh-zon-ik, oh-zoh-nik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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o·zone   (ō'zōn')   
n.  

  1. An unstable, poisonous allotrope of oxygen, O3, that is formed naturally in the ozone layer from atmospheric oxygen by electric discharge or exposure to ultraviolet radiation, also produced in the lower atmosphere by the photochemical reaction of certain pollutants. It is a highly reactive oxidizing agent used to deodorize air, purify water, and treat industrial wastes.

  2. Informal Fresh, pure air.


[German Ozon, from Greek ozon, neuter present participle of ozein, to smell.]
o·zo'nic (ō-zō'nĭk, ō-zŏn'ĭk), o'zon'ous (ō'zō'nəs) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

ozone 
1840, from Ger. Ozon, coined in 1840 by Ger. chemist Christian Friedrich Schönbein (1799-1868) from Gk. ozon, neut. prp. of ozein "to smell." So called for its pungent odor.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ozone
Pronunciation: 'O-"zOn
Function: noun
: a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that isformed naturally in the atmosphere by a photochemical reaction and is a major air pollutant in the lower atmosphere but a beneficial component of the upper atmosphere, and that is used for oxidizing,bleaching, disinfecting, and deodorizing —ozo·nic /O-'zO-nik, -'zän-ik/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

ozone o·zone (ō'zōn')
n.
A blue gaseous allotrope of oxygen formed naturally from diatomic oxygen by electric discharge or exposure to ultraviolet radiation. It is an unstable, powerfully bleaching, poisonous oxidizing agent with a pungent irritating odor, used to deodorize air, purify water, treat industrial wastes and as a bleach.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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