ヘミメリト酸さんMeanings1nounhemimellitic acidchemistryTechnical term in organic chemistry; a benzene tricarboxylic acid isomer.ヘミメリト酸さんはベンゼン環かんに三みっつのカルボキシル基きが隣りん接せつして結けつ合ごうした構こう造ぞうを持もつ。Hemimellitic acid has a structure in which three carboxyl groups are attached adjacently to a benzene ring.