dieldrin

[deel-drin]

diel·drin

[deel-drin]
noun Chemistry.
a light tan, crystalline, water-insoluble, poisonous solid, C12H8OCl6, used as an insecticide: manufacture and use have been discontinued in the U.S.

Origin:
1945–50; Diel(s-Al)d(e)r (reaction) + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Dieldrin is always a great word to know.
So is formaldehyde. Does it mean:
a compound in which oxygen is bonded to one or more electropositive atoms
a colorless, toxic, water-soluble gas having a suffocating odor, used chiefly as a disinfectant and preservative, contained in resins and plastics
Collins
World English Dictionary
dieldrin (ˈdiːldrɪn)
 
n
a crystalline insoluble substance, consisting of a chlorinated derivative of naphthalene: a contact insecticide the use of which is now restricted as it accumulates in the tissues of animals. Formula: C12H8OCl6
 
[C20: from Diel(s-Al)d(e)r (reaction) + -in]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

dieldrin di·el·drin (dī-ěl'drĭn, dēl'-)
n.
A chlorinated hydrocarbon used as an insecticide and in mothproofing.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dieldrin   (dēl'drĭn)  Pronunciation Key 
A light tan, toxic, carcinogenic compound used as an insecticide on fruit, soil, and seed, and in controlling tsetse flies and other carriers of tropical diseases. Chemical formula: C12H8Cl6O.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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