diatomaceous earth

/ˈdaɪədəˌmeɪʃəs ərθ/
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Other forms: diatomaceous earths

Definitions of diatomaceous earth
  1. noun
    a light soil consisting of siliceous diatom remains and often used as a filtering material
    synonyms: diatomite, kieselguhr
    see moresee less
    type of:
    filter
    device that removes something from whatever passes through it
    earth, ground
    the loose soft material that makes up a large part of the land surface
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