verb (used with object), fumigated, fumigating.
to expose to smoke or fumes, as in disinfecting or exterminating roaches, ants, etc.

1520–30; < Latin fūmigātus, past participle of fūmigāre to smoke, fumigate, equivalent to fūm(us) smoke + -igāre (v. suffix based on -ig-, noun derivative of agere to drive, do, as in remex, stem remig- oarsman, hence remigāre to row)

fumigation, noun
fumigatory [fyoo-mi-guh-tawr-ee, -tohr-ee, -gey-tuh-ree] , adjective
subfumigation, noun
unfumigated, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
fumigate (ˈfjuːmɪˌɡeɪt)
to treat (something contaminated or infected) with fumes or smoke
[C16: from Latin fūmigāre to smoke, steam, from fūmus smoke + agere to drive, produce]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

late 14c., "make aromatic smoke as part of a ceremony," from O.Fr. fumigation, from L. fumigationem (nom. fumigatio), from fumigare "to smoke," from fumus "smoke, fume" + root of agere "to drive" (see act). Sense of "expose (someone or something) to aromatic fumes" is c.1400,
originally as a medicinal or therapeutic treatment.

1520s, back formation from fumigation. Related: Fumigated; fumigating.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

fumigate fu·mi·gate (fyōō'mĭ-gāt')
v. fu·mi·gat·ed, fu·mi·gat·ing, fu·mi·gates
To subject to smoke or fumes, usually in order to exterminate pests or disinfect.

fu'mi·ga'tion n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Fumigation of fruit using methyl bromide is an important quarantine treatment against many pests, including fruit flies.
Methyl bromide is a widely used pesticide for fumigation of stored product pests.
Proper dispensing equipment and training in fumigation is necessary and required to ensure a safe and effective fumigation.
Fumigation is another procedure that adds cost and time to border crossings of agricultural products.
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