per·​chlo·​rate | \ (ˌ)pər-ˈklȯr-ˌāt How to pronounce perchlorate (audio) , -ət \

Definition of perchlorate

: a salt or ester of perchloric acid

Examples of perchlorate in a Sentence

Recent Examples on the Web Across the San Gabriel Valley, compounds like perchlorate, used in rocket fuel, and other chemicals seeped into something like 170 square miles, reaching into the aquifer serving more than a million and a half people. Los Angeles Times, 12 Oct. 2021 The monkeys at the Mesa breeding facility are drinking well water tainted with perchlorate, a contaminant leached from ponds containing rocket fuel runoff from an adjacent defense contractor. Rob O'dell, USA TODAY, 9 Oct. 2021 Agents found that Dodson had purchased 50 pounds of potassium perchlorate in the spring. John Caniglia, cleveland, 1 Oct. 2021 As astrobiologist Dirk Schulze-Makuch writes for Air & Space magazine, the toughest Earth fungus can survive in water with up to 23 percent sodium perchlorate mixed in, while the strongest bacterium could only handle a 12 percent solution. Theresa Machemer, Smithsonian Magazine, 30 Sep. 2020 The agency recently pulled back on regulating perchlorate, a water contaminant tied to fetal brain damage, and last year opted not to ban asbestos over the objections of agency scientists. Lisa Friedman, New York Times, 23 Sep. 2020 Another 16 million people across 35 states drink water contaminated by perchlorate, a rocket fuel component used on U.S. military bases that can cause neurological damage in infants and young children. Elliott Negin, Scientific American, 14 Sep. 2020 Regardless, in June, the Trump EPA defied a court order and finalized its decision to forego a standard limiting perchlorate’s concentration in drinking water. Elliott Negin, Scientific American, 14 Sep. 2020 The state is asking Portland to collect and analyze stormwater for chromium, hexavalent chromium, lead, zinc, copper, barium and perchlorate. oregonlive, 31 July 2020

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

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First Known Use of perchlorate

1817, in the meaning defined above

History and Etymology for perchlorate

International Scientific Vocabulary

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Time Traveler for perchlorate

Time Traveler

The first known use of perchlorate was in 1817

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Dictionary Entries Near perchlorate



perchloric acid

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Statistics for perchlorate

Last Updated

20 Oct 2021

Cite this Entry

“Perchlorate.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2021.

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More Definitions for perchlorate


per·​chlo·​rate | \ (ˈ)pər-ˈklō(ə)r-ˌāt, -ˈklȯ(ə)r-, -ət How to pronounce perchlorate (audio) \

Medical Definition of perchlorate

: a salt or ester of perchloric acid

More from Merriam-Webster on perchlorate Encyclopedia article about perchlorate


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