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
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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
Cite this Entry
“Cyanuric acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cyanuric%20acid. Accessed 5 Jul. 2025.
Copy CitationMedical 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
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