Diatomaceous Earth: An earthy deposit formed mainly of diatoms (one-celled marine life forms) that are pulverized and resemble sandy flour.
diatomaceous earth
An earthy deposit of fine, grayish, siliceous material composed chiefly or wholly of the remains of diatoms. It may occur as a powder or as a porous, rigid material.
diatoms ...
Diatomaceous Earth (Diatomite)
A chalk-like material (fossilized diatoms) used to filter out solid waste in wastewater treatment plants; also used as an active ingredient in some powdered pesticides.
Diazinon ...
diatomaceous earth filtration A filtration method resulting in substantial particulate removal that uses a process in which: 1) a "precoat" cake of diatomaceous earth filter media is deposited on a support membrane (septum) and 2) while the ...
diatomaceous earth. A fine, siliceous (made of silica)
"earth" composed mainly of the skeletal remains of dia-
toms, a type of free-floating, microscopic plant found in the ...
 See also: Organic, Sediment, Soil, Water, Sedimentation
  
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