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dioxide

[dahy-ok-sahyd, -sid] /daɪˈɒk saɪd, -sɪd/
noun, Chemistry
1.
an oxide containing two atoms of oxygen, each of which is bonded directly to an atom of a second element, as manganese dioxide, MnO 2 , or nitrogen dioxide, NO 2 .
Origin
1840-1850
1840-50; di-1 + oxide
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for dioxide
  • When this elemental sulfur is burned in the air, it forms sulfur dioxide.
  • The outer layer of silicon dioxide protects the active layers inside.
British Dictionary definitions for dioxide

dioxide

/daɪˈɒksaɪd/
noun
1.
any oxide containing two oxygen atoms per molecule, both of which are bonded to an atom of another element
2.
another name for a peroxide (sense 4)
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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dioxide in Medicine

dioxide di·ox·ide (dī-ŏk'sīd)
n.
A compound containing two oxygen atoms per molecule.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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dioxide in Science
dioxide
  (dī-ŏk'sīd)   
A compound containing two oxygen atoms per molecule.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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