bleaching powder
noun
: a white powder consisting chiefly of calcium hydroxide, calcium chloride, and calcium hypochlorite and used as a bleach, disinfectant, or deodorant
Examples of bleaching powder in a Sentence
Recent Examples on the Web
The fire broke out around midday on the third floor of the four-story factory in the Mirpur area of the capital, Dhaka, before spreading to a chemical warehouse storing bleaching powder, plastic and hydrogen peroxide, fire department official Talha Bin Jashim said, citing witnesses.
—
Reuters, NBC news, 15 Oct. 2025
Mix a tablespoon bleaching powder with 1 gallon warm water and stir to dissolve.
—Megan Boettcher, Better Homes & Gardens, 4 Aug. 2022
The steamship England, which cleared from Queenstown on January 12th, with 200 passengers on board, was obliged to put back to harbor in consequence of the breaking, during a heavy storm, of a number of barrels of bleaching powder in the hold.
—Dan Schlenoff, Scientific American, 26 Jan. 2021
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Reuters, NBC news, 15 Oct. 2025
Mix a tablespoon bleaching powder with 1 gallon warm water and stir to dissolve.
—Megan Boettcher, Better Homes & Gardens, 4 Aug. 2022
The steamship England, which cleared from Queenstown on January 12th, with 200 passengers on board, was obliged to put back to harbor in consequence of the breaking, during a heavy storm, of a number of barrels of bleaching powder in the hold.
—Dan Schlenoff, Scientific American, 26 Jan. 2021
Cite this Entry
“Bleaching powder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bleaching%20powder. Accessed 3 Nov. 2025.
Copy CitationMedical Definition
bleaching powder
noun
bleach·ing powder
ˌblē-chiŋ- 
: a white powder consisting chiefly of calcium hydroxide, calcium chloride, and calcium hypochlorite used as a bleach, disinfectant, or deodorant
called also chloride of lime, chlorinated lime
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