hydroquinone

[ hahy-droh-kwi-nohn, -druh-kwin-ohn ]

/ ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn /

noun Chemistry.

a white, crystalline compound, C6H6O2, formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions.

Also called hy·dro·quin·ol

[hahy-druh-kwin-awl, -ol], /ˌhaɪ drəˈkwɪn ɔl, -ɒl/, quinol.

Origin of hydroquinone

First recorded in 1860–65; hydro-¹ + quinone

Words nearby hydroquinone

hydropneumothorax, hydroponics, hydropower, hydrops, hydropyonephrosis, hydroquinone, hydrorhiza, hydrorrhea, hydrorrhea gravidarum, hydros., hydrosalpinx

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

Example sentences from the Web for hydroquinone

By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5|Various
When hydrolyzed by mineral acids or emulsin, it yields glucose and hydroquinone.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher
Hydroquinone as a developer was introduced this year by Eder and Toth, but it did not make much progress at first.
The Evolution of Photography |John Werge
Hydroquinone was obtained by Caventou and Pelletier by heating quinic acid, but these chemists did not recognize its true nature.
Coal|Raphael Meldola

When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1|Various

British Dictionary definitions for hydroquinone

hydroquinone

hydroquinol (ˌhaɪdrəʊˈkwɪnɒl)

/ (ˌhaɪdrəʊkwɪˈnəʊn) /

noun

a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C 6 H 4 (OH) 2Also called: quinol

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 hydroquinone

hydroquinone

[ hī′drō-kwĭ-nōn′, -kwĭn′ōn′ ]

n.

A white crystalline compound used as an antioxidant, a stabilizer, and a reagent.hydroquinol

单词	hydroquinone
释义	hydroquinone [ hahy-droh-kwi-nohn, -druh-kwin-ohn ] / ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn / noun Chemistry. a white, crystalline compound, C6H6O2, formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions. Also called hy·dro·quin·ol [hahy-druh-kwin-awl, -ol], /ˌhaɪ drəˈkwɪn ɔl, -ɒl/, quinol. Origin of hydroquinone First recorded in 1860–65; hydro-¹ + quinone Words nearby hydroquinone hydropneumothorax, hydroponics, hydropower, hydrops, hydropyonephrosis, hydroquinone, hydrorhiza, hydrorrhea, hydrorrhea gravidarum, hydros., hydrosalpinx Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for hydroquinone By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5\|Various When hydrolyzed by mineral acids or emulsin, it yields glucose and hydroquinone. The Chemistry of Plant Life\|Roscoe Wilfred Thatcher Hydroquinone as a developer was introduced this year by Eder and Toth, but it did not make much progress at first. The Evolution of Photography \|John Werge Hydroquinone was obtained by Caventou and Pelletier by heating quinic acid, but these chemists did not recognize its true nature. Coal\|Raphael Meldola When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1\|Various British Dictionary definitions for hydroquinone hydroquinone hydroquinol (ˌhaɪdrəʊˈkwɪnɒl) / (ˌhaɪdrəʊkwɪˈnəʊn) / noun a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C 6 H 4 (OH) 2Also called: quinol 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 hydroquinone hydroquinone [ hī′drō-kwĭ-nōn′, -kwĭn′ōn′ ] n. A white crystalline compound used as an antioxidant, a stabilizer, and a reagent.hydroquinol The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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