chlo·​rate ˈklȯr-ˌāt How to pronounce chlorate (audio)
: a salt containing the anion ClO3
chlorate of potassium

Example Sentences

Recent Examples on the Web Whoever produced these stars has mastered the barium chlorate concoction that gives fireworks the toxic-green sheen of Ghostbusters’ Slimer. Popular Mechanics Editors, Popular Mechanics, 30 June 2022 Fireworks permitted: Cylinder fountains, cone fountains, sparklers containing no magnesium, chlorate or perchlorate; snakes containing no mercury, small smoke devices. Scott Gleeson, USA TODAY, 1 July 2022 Potassium chlorate breaks down into plumes of potassium chloride gas. Jennifer Leman, Popular Mechanics, 31 May 2020 Farmer also suggests that people may want to avoid cleaning materials that contain peroxides, chlorates or perchlorates—all of which are oxidants that can react with a variety of common household chemicals to form toxic compounds. Emily Anthes, Scientific American, 1 June 2020 Always keep matches and lighter fluid out of your pets’ reach: Certain types of matches contain chlorates, which could potentially damage blood cells and result in difficulty breathing -- or even kidney disease in severe cases. Other Voices,, 27 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chlorate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1823, in the meaning defined above

Time Traveler
The first known use of chlorate was in 1823

Dictionary Entries Near chlorate

Cite this Entry

“Chlorate.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2023.

Medical Definition


: a salt containing the anion ClO3
chlorate of potassium

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