chlo·ro·auric acid \| ̷ ̷ ̷ ̷+...-\noun alsochlor·auric acid\(ˈ)klōr, -ȯr+...-\ Etymology: International Scientific Vocabulary chlor- + auric : an acid HAuCl4 formed when gold is dissolved in aqua regia and obtainable as long yellow deliquescent crystals