catechol

[ kat-i-kawl, -kol ]

/ ˈkæt ɪˌkɔl, -ˌkɒl /

noun

a colorless, crystalline, dihydroxyl derivative of benzene, C6H6O2, the ortho isomer, used chiefly in photography, for dyeing, and as a reagent; pyrocatechol.

Origin of catechol

First recorded in 1875–80; catech(u) + -ol¹

Words nearby catechol

catechetical, catechin, catechism, catechist, catechize, catechol, catecholamine, catechu, catechumen, categorematic, categorial

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for catechol

The tannins are divided into two general classes, known respectively as the pyrogallol tannins and the catechol tannins.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher
Of these the catechins are the most typical, and have been considered as the parent substances of the catechol tans.
Animal Proteins|Hugh Garner Bennett
"Quercitannic acid," obtained from oak bark, etc., is likewise a catechol tannin.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher
Tanning materials are divided into two main classes: Pyrogallol, Catechol.
Leather|K. J. Adcock

Xanthin and catechol browns are pleasing in appearance, but their effect is less rich than that obtained with potash.
The Decoration of Leather|Georges de Rcy

British Dictionary definitions for catechol

catechol

/ (ˈkætɪˌtʃɒl, -ˌkɒl) /

noun

a colourless crystalline phenol found in resins and lignins; 1,2-dihydroxybenzene. It is used as a photographic developer. Formula: C 6 H 4 (OH) 2Also called: pyrocatechol

Word Origin for catechol

C20: from catechu + -ol 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 catechol

catechol

[ kăt′ĭ-kôl′, -kōl′ ]

n.

pyrocatechol

Scientific definitions for catechol

catechol

[ kăt′ĭ-kôl′, -kōl′ ]

A biologically important organic phenol occurring naturally in lignins and resins. It has two hydroxyl groups attached to a benzene ring. Catechol is very caustic and is used in dyeing and as a photographic developer and an antiseptic. Chemical formula: C6H6O2.

单词	catechol
释义	catechol [ kat-i-kawl, -kol ] / ˈkæt ɪˌkɔl, -ˌkɒl / noun a colorless, crystalline, dihydroxyl derivative of benzene, C6H6O2, the ortho isomer, used chiefly in photography, for dyeing, and as a reagent; pyrocatechol. Origin of catechol First recorded in 1875–80; catech(u) + -ol¹ Words nearby catechol catechetical, catechin, catechism, catechist, catechize, catechol, catecholamine, catechu, catechumen, categorematic, categorial Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for catechol The tannins are divided into two general classes, known respectively as the pyrogallol tannins and the catechol tannins. The Chemistry of Plant Life\|Roscoe Wilfred Thatcher Of these the catechins are the most typical, and have been considered as the parent substances of the catechol tans. Animal Proteins\|Hugh Garner Bennett "Quercitannic acid," obtained from oak bark, etc., is likewise a catechol tannin. The Chemistry of Plant Life\|Roscoe Wilfred Thatcher Tanning materials are divided into two main classes: Pyrogallol, Catechol. Leather\|K. J. Adcock Xanthin and catechol browns are pleasing in appearance, but their effect is less rich than that obtained with potash. The Decoration of Leather\|Georges de Rcy British Dictionary definitions for catechol catechol / (ˈkætɪˌtʃɒl, -ˌkɒl) / noun a colourless crystalline phenol found in resins and lignins; 1,2-dihydroxybenzene. It is used as a photographic developer. Formula: C 6 H 4 (OH) 2Also called: pyrocatechol Word Origin for catechol C20: from catechu + -ol 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 catechol catechol [ kăt′ĭ-kôl′, -kōl′ ] n. pyrocatechol The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for catechol catechol [ kăt′ĭ-kôl′, -kōl′ ] A biologically important organic phenol occurring naturally in lignins and resins. It has two hydroxyl groups attached to a benzene ring. Catechol is very caustic and is used in dyeing and as a photographic developer and an antiseptic. Chemical formula: C6H6O2. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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