oxalic acidox·al·ic acid
a colorless, poisonous, crystalline acid, (COOH), found in oxalis and other plants or prepared synthetically and used in dyeing, bleaching, etc.
Origin of oxalic acidFrench oxalique ; from Classical Latin oxalis: see oxalis
A poisonous, colorless crystalline dicarboxylic acid, C2H2O4, found in many plants, such as spinach, and used as a bleach and rust remover.
Origin of oxalic acidLatin oxalis, wood sorrel; see oxalis + –ic.