fu·mi·gant

[fyoo-mi-guhnt]
noun
any volatile or volatilizable chemical compound used as a disinfectant or pesticide.

Origin:
1720–30; < Latin fūmigant- (stem of fūmigāns, present participle of fūmigāre), equivalent to fūmig- (see fumigate) + -ant- -ant

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Collins
World English Dictionary
fumigant (ˈfjuːmɪɡənt) [Click for IPA pronunciation guide]
 
n
a substance used for fumigating

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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00:10
Fumigant is always a great word to know.
So is bezoar. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
American Heritage
Medical Dictionary

fumigant fu·mi·gant (fy&oomacr;'mĭ-gənt)
n.
A chemical compound used in its gaseous state as a 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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Encyclopedia Britannica
Encyclopedia

fumigant

any volatile, poisonous substance used to kill insects, nematodes, and other animals or plants that damage stored foods or seeds, human dwellings, clothing, and nursery stock. Soil fumigants are sprayed or spread over an area to be cultivated and are worked into the soil to control disease-causing fungi, nematodes, and weeds

Learn more about fumigant with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Some biological, chemical and physical properties of sulfuryl fluoride as an
  insecticidal fumigant.
The primary source of sulfuryl fluoride in the environment is from its use as a
  fumigant.
Supervisors urge governor to re-examine fumigant of public comment from both
  sides.
The ignitable gas cartridge has been the traditional burrow fumigant for many
  years.
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