cyanuric acid

noun

cy·​an·​uric acid ˌsī-ə-ˈnu̇r-ik- 

-ˈnyu̇r-

: a crystalline weak acid C₃N₃(OH)₃ that yields cyanic acid when heated

Examples of cyanuric acid in a Sentence

Recent Examples on the Web

Each kit consists of liquids and tablets to test free chlorine, total chlorine, bromine, pH, alkalinity, calcium hardness, and cyanuric acid. —Nor'adila Hepburn, Better Homes & Gardens, 1 June 2023

Pool Type: Chlorine | Parameters Tested: Free chlorine, total chlorine, bromine, pH, alkalinity, cyanuric acid, hardness. —Nor'adila Hepburn, Better Homes & Gardens, 1 June 2023

This tests for seven parameters: total hardness, total chlorine, bromine, free chlorine, pH, cyanuric acid, and total alkalinity. —Chris Hachey, BGR, 25 May 2021

It must be used more frequently than chlorine tablets, however, and experts recommend using it in tandem with cyanuric acid as a stabilizer. —Emma Stein, Detroit Free Press, 4 June 2021

Testing for free chlorine, total chlorine, bromine, total hardness, total alkalinity, pH and cyanuric acid is made easy with these strips. —Chris Hachey, BGR, 25 May 2021

After several years, the researchers homed in on a few promising candidates, most notably two molecules, triaminopyrimidine (TAP) and cyanuric acid (CA). —Quanta Magazine, 5 Feb. 2014

Word History

Etymology

cyan- + urea

First Known Use

1838, in the meaning defined above

Medical Definition

cyanuric acid

noun

cy·​an·​uric acid ˌsī-ə-ˌn(y)u̇r-ik- 

: a crystalline weak acid C₃H₃N₃O₃ used especially in swimming pools to protect the available chlorine from dissipation by sunlight