pyrotartaric acid
noun
py·ro·tartaric acid
"+…-
: a crystalline acid HOOCCH2CH(CH3)COOH obtained by pyrolysis of tartaric acid or pyruvic acid and occurring in dextro, levo, and racemic forms; methyl-succinic acid
Word History
Etymology
International Scientific Vocabulary pyr- + tartaric; originally formed as French pyrotartarique