phthalic acid

noun

phthal·​ic acid ˈtha-lik- 

: any of three isomeric acids C₈H₆O₄ obtained by oxidation of various benzene derivatives

Word History

Etymology

International Scientific Vocabulary, short for obsolete naphthalic acid, from naphthalene

First Known Use

1857, in the meaning defined above

Medical Definition

phthalic acid

noun

phthal·​ic acid ˌthal-ik- 

: any of three isomeric acids C₈H₆O₄ obtained by oxidation of various benzene derivatives