Englishphthalic acidnounMeaningAny of three isomeric aromatic organic benzenedicarboxylic acids, C6H4(COOH)2; especially the ortho- isomer manufactured from naphthalene, used in the synthesis of dyes, perfumes and other compounds.Related wordsphthalic anhydride(English)phthaloyl(English)naphthalic acid(English)phthalaldehyde(English)phthalyl(English)phthalate(English)benzenedicarboxylic acid(English)isophthalic acid(English)SourcesDictionaryAPI.dev English dictionary data