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noun Chemistry.
a colorless, toxic, potentially carcinogenic, water-soluble gas, CH2O, having a suffocating odor, usually derived from methyl alcohol by oxidation: used chiefly in aqueous solution, as a disinfectant and preservative, and in the manufacture of various resins and plastics.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Formaldehyde
is always a great word to know.
So is nicotine. Does it mean:
| a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide |
| a purplish-red, water-soluble powder, C20H11N2O10Na3, an azo dye used chiefly to color pharmaceuticals, food, and garments |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
formaldehyde
1872, formed from form(ic acid) + aldehyde, coined by Ger. chemist Justus von Liebig (1803-73), abbreviation of al(cohol) dehyd(rogenatum) "dehydrogenated alcohol."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
formaldehyde for·mal·de·hyde (fôr-māl'də-hīd')
n.
A colorless, gaseous compound that is the simplest aldehyde, used for manufacturing melamine and phenolic resins, fertilizers, dyes, and embalming fluids and in aqueous solution as a preservative and disinfectant.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
formaldehyde  (fôr-māl'də-hīd') Pronunciation Key
A colorless gas having a sharp, suffocating odor. It is used in making plastics and, when dissolved in a solution of water and methanol, to preserve biological specimens. Chemical formula: CH2O. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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