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[gwahy-uh-kohl, -kawl] /ˈgwaɪ əˌkoʊl, -ˌkɔl/
noun, Pharmacology.
a slightly yellowish, aromatic, crystalline substance, C 7 H 8 O 2 , resembling creosote and usually obtained from guaiacum resin: used in medicine chiefly as an expectorant and local anesthetic.
Also called methylcatechol.
Origin of guaiacol
1860-65; guaiac(um) + -ol2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for guaiacol


a yellowish oily creosote-like liquid extracted from guaiacum resin and hardwood tar, used medicinally as an expectorant. Formula: C7H8O2
Word Origin
from guaiac(um) + -ol²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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guaiacol in Medicine

guaiacol guai·a·col (gwī'ə-kôl', -kōl')
A yellowish, oily, aromatic substance derived from guaiacum or wood creosote and used chiefly as an expectorant, a local anesthetic, and an antiseptic.

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