: 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
The dishwasher sanitizer measured a zero point zero in sanitizing chlorine.
—
David J. Neal, Miami Herald, 11 Oct. 2025
Compared to existing methods to recover rare earth elements, a process based on rapidly heating waste magnet material in the presence of chlorine gas uses one-third of the processing steps, reduces energy consumption by 87 percent, and produces 84 percent fewer greenhouse gas emissions.
—IEEE Spectrum, 9 Oct. 2025
There are several kinds of events companies must report to the federal government, including deaths and releases of particular chemicals, such as chlorine, naphthalene and vinyl chloride.
—Philip Steenstra, The Conversation, 9 Oct. 2025
Municipal water sources may have additives like chlorine or fluoride that can harm sensitive plants.
—Mary Marlowe Leverette, Southern Living, 9 Oct. 2025
See All Example Sentences for chlorine
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David J. Neal, Miami Herald, 11 Oct. 2025
Compared to existing methods to recover rare earth elements, a process based on rapidly heating waste magnet material in the presence of chlorine gas uses one-third of the processing steps, reduces energy consumption by 87 percent, and produces 84 percent fewer greenhouse gas emissions.
—IEEE Spectrum, 9 Oct. 2025
There are several kinds of events companies must report to the federal government, including deaths and releases of particular chemicals, such as chlorine, naphthalene and vinyl chloride.
—Philip Steenstra, The Conversation, 9 Oct. 2025
Municipal water sources may have additives like chlorine or fluoride that can harm sensitive plants.
—Mary Marlowe Leverette, Southern Living, 9 Oct. 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 17 Oct. 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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