diatomaceous earth

noun
|Updated on: 16 Jul 2018

Definition of diatomaceous earth

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

Recent Examples of diatomaceous earth from the Web

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

First Known Use of diatomaceous earth

1883

in the meaning defined above

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diatomaceous earth

noun

medical Definition of diatomaceous earth


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