diatomaceous earth
noun
: a light friable siliceous material derived chiefly from diatom remains and used especially as a filter
Example Sentences
Recent Examples on the Web Various models use different filter media (such as sand, cartridges, and diatomaceous earth) to capture debris floating in your pool water, which means there are quite a few filter options to choose from. 
Rachel Klein, Popular Mechanics, 14 June 2022 Hume is a lot of good things: free of baking soda and aluminum, and loaded with moisture- and odor-absorbing kaolin clay, tapioca starch, and diatomaceous earth as well as soothing aloe. Adam Hurly, Robb Report, 21 Apr. 2022 Fones Cliffs, an unusual outcropping of white diatomaceous earth, is on the east side of the river in Richmond County on the Northern Neck of Virginia. Washington Post, 27 Mar. 2022 This one is made of diatomaceous earth, a natural rock that soaks up water instantly (mildew doesn't stand a chance!). Petra Guglielmetti, Health.com, 11 Mar. 2022 These sleek, modern dog bowls from Dorai Home come with a base made from diatomaceous earth. Amanda Lauren, Forbes, 30 Sep. 2021 Here, the attack includes neem oil, diatomaceous earth, and hydrogen peroxide. Perri Ormont Blumberg, Southern Living, 21 May 2021 Plug up any gaps in the windows or paneling, placing diatomaceous earth or cedar chips to ward off insects. Andrew Hard, chicagotribune.com, 22 Jan. 2021 There is a huge chunk of diatomaceous earth in one corner — the limestone-like soils prevalent in the Sta. Matt Kettmann, SFChronicle.com, 23 June 2020 See More
Rachel Klein, Popular Mechanics, 14 June 2022 Hume is a lot of good things: free of baking soda and aluminum, and loaded with moisture- and odor-absorbing kaolin clay, tapioca starch, and diatomaceous earth as well as soothing aloe. Adam Hurly, Robb Report, 21 Apr. 2022 Fones Cliffs, an unusual outcropping of white diatomaceous earth, is on the east side of the river in Richmond County on the Northern Neck of Virginia. Washington Post, 27 Mar. 2022 This one is made of diatomaceous earth, a natural rock that soaks up water instantly (mildew doesn't stand a chance!). Petra Guglielmetti, Health.com, 11 Mar. 2022 These sleek, modern dog bowls from Dorai Home come with a base made from diatomaceous earth. Amanda Lauren, Forbes, 30 Sep. 2021 Here, the attack includes neem oil, diatomaceous earth, and hydrogen peroxide. Perri Ormont Blumberg, Southern Living, 21 May 2021 Plug up any gaps in the windows or paneling, placing diatomaceous earth or cedar chips to ward off insects. Andrew Hard, chicagotribune.com, 22 Jan. 2021 There is a huge chunk of diatomaceous earth in one corner — the limestone-like soils prevalent in the Sta. Matt Kettmann, SFChronicle.com, 23 June 2020 See More Word History
First Known Use
1883, in the meaning defined above
Medical Definition
diatomaceous earth
noun
: diatomite