ar·​se·​nate ˈärs-nət How to pronounce arsenate (audio)
: a salt or ester of an arsenic acid

Example Sentences

Recent Examples on the Web By the way, for more than 60 years PT lumber was infused with chromated copper arsenate (CCA), a suspected--some say, known--carcinogen. Joseph Truini, Popular Mechanics, 6 June 2017 As with Zika today in Brazil, a pesticide was widely blamed: tree spray containing arsenate of lead. Donald G. Mcneil Jr., New York Times, 29 Aug. 2016

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

Word History


arsenic acid + -ate entry 1

First Known Use

1800, in the meaning defined above

Time Traveler
The first known use of arsenate was in 1800

Dictionary Entries Near arsenate

Cite this Entry

“Arsenate.” Dictionary, Merriam-Webster, Accessed 27 Nov. 2022.

Medical Definition



ar·​se·​nate ˈärs-nət How to pronounce arsenate (audio) -ᵊn-ət How to pronounce arsenate (audio)
: a salt or ester of an arsenic acid
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