[ men-thawl, -thol ]
/ ˈmɛn θɔl, -θɒl /
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Also called hexahydrothymol, peppermint camphor. Chemistry, Pharmacology. a colorless, crystalline, slightly water-soluble alcohol, C10H20O, obtained from peppermint oil or synthesized: used chiefly in perfumes, confections, cigarettes, and liqueurs and in medicine for colds and nasal disorders for its cooling effect on mucous membranes.
a mentholated cigarette.
containing menthol; mentholated.
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Origin of menthol

1875–80; <New Latin Menth(a) (see mint1) + -ol1
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British Dictionary definitions for menthol

/ (ˈmɛnθɒl) /

an optically active organic compound found in peppermint oil and used as an antiseptic, in inhalants, and as an analgesic. Formula: C 10 H 20 O

Word Origin for menthol

C19: from German, from Latin mentha mint 1
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

Medical definitions for menthol

[ mĕnthôl′ ]

A white crystalline organic compound obtained from peppermint oil or synthesized and used as a mild topical anesthetic.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for menthol

[ mĕnthôl′ ]

A white, crystalline compound obtained from peppermint oil. It is used as a flavoring and as a mild anesthetic. Chemical formula: C10H20O.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.