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cream of tartar

noun
1.
a white, crystalline, water-soluble powder, C 4 H 5 KO 6 , used chiefly as an ingredient in baking powders and in galvanic tinning of metals.
Also called potassium bitartrate, potassium acid tartrate.
Compare tartar (def 3).
Origin
1655-1665
1655-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cream-tartar

cream of tartar

noun
1.
another name for potassium hydrogen tartrate, esp when used in baking powders
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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9
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