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[kat-i-kawl, -kol] /ˈkæt ɪˌkɔl, -ˌkɒl/
a colorless, crystalline, dihydroxyl derivative of benzene, C 6 H 6 O 2 , the ortho isomer, used chiefly in photography, for dyeing, and as a reagent; pyrocatechol.
Origin of catechol
1875-80; catech(u) + -ol1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for catechol
  • Exposure to catechol may occur during its manufacture and use.
British Dictionary definitions for catechol


/ˈkætɪˌtʃɒl; -ˌkɒl/
a colourless crystalline phenol found in resins and lignins; 1,2-dihydroxybenzene. It is used as a photographic developer. Formula: C6H4(OH)2 Also called pyrocatechol
Word Origin
C20: from catechu + -ol1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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catechol in Medicine

catechol cat·e·chol (kāt'ĭ-kôl', -kōl')
See pyrocatechol.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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catechol in Science
  (kāt'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 © 2002. Published by Houghton Mifflin. All rights reserved.
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