Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Silica.
  • n. Finely ground tripoli used as an inert paint filler.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Flint.
  • n. A finely ground relatively pure form of silicas used as a paint filler etc.

from the GNU version of the Collaborative International Dictionary of English

  • n. Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See silica, and silicic.

from The Century Dictionary and Cyclopedia

  • n. Same as silica.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a pure form of finely ground silica
  • n. a vacuum coffee maker

Etymologies

Latin, hard stone, flint.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin silex. (Wiktionary)

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