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di'atoma'ceous earth'




a fine siliceous earth composed chiefly of the cell walls of diatoms: used in filtration, as an abrasive, etc. Also called di•at•o•mitePronunciation: (dī-at'u-mīt"), [key] kieselguhr.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

diatomaceousdiatomic
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