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propanedioic acid

noun
  1. a colourless crystalline compound occurring in sugar beet. Formula: C 3 H 4 O 4,CH 2 (COOH) 2Also called: malonic acid
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Word Origin

C20: from propane + di- 1 + -o- + -ic
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