DEET

noun

variants or deet
: a colorless oily liquid insect and tick repellent C12H17NO
For the best protection against both mosquitoes and ticks, the CDC recommends products containing DEET.Kiera Butler
A repellent with deet is considered the most effective against ticks.Robert H. Boyle

Word History

Etymology

probably from d. e. t., from di- + ethyl + toluamide (C8H9NO)

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of DEET was in 1961

Dictionary Entries Near DEET

Cite this Entry

“DEET.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/DEET. Accessed 14 Jun. 2024.

Medical Definition

deet

noun
often all capitalized
: a colorless oily liquid insect and tick repellent C12H17NO
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