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Nitrous oxide

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nitrous oxide

–noun Chemistry, Pharmacology.
a colorless, sweet-smelling, sweet-tasting, nonflammable, slightly water-soluble gas, N2O, that sometimes produces a feeling of exhilaration when inhaled: used chiefly as an anesthetic in dentistry and surgery, in the manufacture of chemicals, and as an aerosol.
Also called laughing gas.


Origin:
1790–1800
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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nitrous oxide  
n.  A colorless, sweet-tasting gas, N2O, used as a mild anesthetic in dentistry and surgery.
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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Medical Dictionary

Main Entry: nitrous oxide
Function: noun
: a colorless gas N2O that when inhaled produces loss of sensibility to pain preceded by exhilaration and sometimeslaughter and is used especially as an anesthetic in dentistry called also laughing gas
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

nitrous oxide n.
A colorless sweet-tasting gas used as a mild anesthetic in dentistry and surgery.

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