diatomaceous earth

noun

: a light friable siliceous material derived chiefly from diatom remains and used especially as a filter

Examples of diatomaceous earth in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Usually a good sweep out after nesting season and a light dusting of food-grade diatomaceous earth to take care of pests should be sufficient. Joan Morris, The Mercury News, 23 Sep. 2024 When ground bees come into contact with diatomaceous earth, the microscopic, sharp particles within the powder abrade their exoskeletons, leading to dehydration and death. Nafeesah Allen, Better Homes & Gardens, 22 Sep. 2024 Try boric acid: Like diatomaceous earth, boric acid can be sprinkled around to kill silverfish instantly. Sherri Gordon, Health, 7 Sep. 2024 Use diatomaceous earth: This powdery substance causes insects to lose moisture. Sherri Gordon, Health, 7 Sep. 2024 See all Example Sentences for diatomaceous earth 

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of diatomaceous earth was in 1883

Dictionary Entries Near diatomaceous earth

Cite this Entry

“Diatomaceous earth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diatomaceous%20earth. Accessed 21 Nov. 2024.

Kids Definition

diatomaceous earth

noun
: a light crumbly material that is made up mostly of the silica-containing skeletons of dead diatoms and is used especially as a filter

Medical Definition

diatomaceous earth

noun

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