diatomaceous earth


  • WordNet 3.6
    • n diatomaceous earth a light soil consisting of siliceous diatom remains and often used as a filtering material
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Webster's Revised Unabridged Dictionary
    • diatomaceous earth (Geol) a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called infusorial earth kieselguhr, and diatomite. It is used in polishing powder, and in the manufacture of dynamite.
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In literature:

It is the chief ingredient of sand, sandstone, quartzite, chert, diatomaceous earth, and tripoli.
"The Economic Aspect of Geology" by C. K. Leith
Diatomaceous earth exists at several places in Yezo.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 2" by Various

In news:

Diatomaceous earth is most effective on pests that are under constant moisture stress, which is the typical life situation of most house spiders and insects that wander in from outdoors.
If controlling flies around your chickens is an issue, you can use diatomaceous earth to tame the population.