chlorine

noun

chlo·​rine ˈklȯr-ˌēn 

-ən

: 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

Then, there is an iron and manganese filter that uses ion exchange to catch unwanted particles and reduces chlorine. —Andrea Wurzburger, Better Homes & Gardens, 22 Nov. 2023

This filter showerhead has been designed to help improve hair loss and reduce itching and dandruff by filtering up to 99.9% of rust and heavy metals and chlorine preventing your skin and hair from drying out. —Claire Rutter, Rolling Stone, 9 Nov. 2023

Residents collect water at their community’s source and add pre-measured chlorine to reduce pathogens. —Cameron Pugh, The Christian Science Monitor, 19 Sep. 2023

Thanks to this ingredient along with sodium thiosulfate, the shampoo is also a great option for dissolving chlorine left in hair from pool days. —ELLE, 24 Aug. 2023

Waukesha has traditionally used chlorine to sanitize its groundwater supply. —Jim Riccioli, Journal Sentinel, 21 Aug. 2023

Its multilayer filter uses natural coconut carbon to reduce chlorine and odors. —Julie Laing, Verywell Health, 15 Aug. 2023

The amoeba is generally not found in splash pads or pools, which are usually treated with chlorine, which kills it. —Cara Lynn Shultz, Peoplemag, 15 Sep. 2023

Ash and sediment can also react with chlorine, leading to health problems. —Gwozniac, oregonlive, 8 Sep. 2023

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Word History

First Known Use

1810, in the meaning defined above

Phrases Containing chlorine

• chlorine dioxide
• chlorine monoxide

• chlorine dioxide
• chlorine monoxide

Kids 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