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Definition of Oxalic acid
1. Noun. A toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis.
Medical Definition of Oxalic acid
1. Occurs in plants and is toxic to higher animals by virtue of its calcium binding properties, it causes the precipitation of calcium oxalate in the kidneys, prevents calcium uptake in the gut and is not metabolised. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)