: a halogen element that is isolated as a heavy greenish-yellow diatomic gas of pungent odor and is used especially as a bleach, oxidizing agent, and disinfectant in water purification see Chemical Elements Table
Examples of chlorine in a Sentence
Recent Examples on the Web
Aside from the fact that concentrations of fluoride in drinking water have not been shown to cause harm, the bill allows for the use of a carcinogenic substance — chlorine — to be added to drinking water.
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Sun Sentinel Editorial Board, Sun Sentinel, 4 May 2025
Fluoride and chlorine — to kill bacteria — are added to the water, and it is disinfected with ultraviolet light.
—Yuvraj Khanna, New York Times, 1 May 2025
Hydrogen peroxide reverts to plain water after exposure to sunlight and is safer for use than chlorine bleach.
—Mary Marlowe Leverette, Southern Living, 10 Apr. 2025
Those violations included a dishwasher not having enough chlorine, roach activity and food held at the wrong temperatures.
—Garfield Hylton, Orlando Sentinel, 12 Mar. 2025
See All Example Sentences for chlorine
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Sun Sentinel Editorial Board, Sun Sentinel, 4 May 2025
Fluoride and chlorine — to kill bacteria — are added to the water, and it is disinfected with ultraviolet light.
—Yuvraj Khanna, New York Times, 1 May 2025
Hydrogen peroxide reverts to plain water after exposure to sunlight and is safer for use than chlorine bleach.
—Mary Marlowe Leverette, Southern Living, 10 Apr. 2025
Those violations included a dishwasher not having enough chlorine, roach activity and food held at the wrong temperatures.
—Garfield Hylton, Orlando Sentinel, 12 Mar. 2025
See All Example Sentences for chlorine
Cite this Entry
“Chlorine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chlorine. Accessed 22 May. 2025.
Copy CitationKids Definition
chlorine
noun
chlo·rine
ˈklō(ə)r-ˌēn 
ˈklȯ(ə)r-,
-ən
: a nonmetallic element that is found alone as a heavy greenish yellow irritating gas having two atoms per molecule and a strong odor and that is used especially as a bleach, oxidizing agent, and disinfectant in water purification see element
Medical Definition
chlorine
noun
chlo·rine
ˈklō(ə)r-ˌēn, ˈklȯ(ə)r-, -ən
: a halogen element that is isolated as a heavy greenish yellow gas of pungent odor and is used especially as a bleach, oxidizing agent, and disinfectant in water purification
—symbol Cl
see Chemical Elements Table
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