Relating to or containing cyanuric acid, a weak acid with three amino groups that stabilizes chlorine in water.
From cyan- (blue, cyanide) + -uric (relating to urine; cyanuric acid was discovered in urine). The term combines the cyano- root with the -uric suffix used in biochemistry.
Cyanuric acid was discovered when scientists noticed something weird in urine after people were exposed to cyanide—now it's most famous as the 'pool stabilizer' that keeps your chlorine from disappearing into thin air when the sun hits it.
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