acar·​i·​cide ə-ˈker-ə-ˌsīd How to pronounce acaricide (audio)
: a pesticide that kills mites and ticks
acaricidal adjective

Example Sentences

Recent Examples on the Web Large-scale habitat control or acaricide (tick-killing) treatment of wildlife, though possible, can be difficult or not cost-effective for homeowners. Joyce Sakamoto, Washington Post, 18 June 2018

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

Word History


acar(us) + -i- + -cide

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of acaricide was in 1841

Dictionary Entries Near acaricide

Cite this Entry

“Acaricide.” Dictionary, Merriam-Webster, Accessed 28 Mar. 2023.

Medical Definition


acar·​i·​cide ə-ˈkar-ə-ˌsīd How to pronounce acaricide (audio)
: a pesticide that kills mites and ticks

More from Merriam-Webster on acaricide

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