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Definition of Cinnamic acid
1. Noun. (organic compound) The aromatic carboxylic acid C6H5-CH=CH-COOH obtained from cinnamon; it is used in perfumery etc ¹
¹ Source: wiktionary.com
Medical Definition of Cinnamic acid
1. C6H5CH==CHCOOH; 3-phenylpropenoic acid;obtained from cinnamon oil, Peruvian and tolu balsams, or storax. It has been used in lupus as paint and in infectious diseases to promote leukocytosis. Synonym: cinnamylic acid, phenylacrylic acid. (05 Mar 2000)