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

  • n. Amorphous silica that resembles white sand and is used as a drying and dehumidifying agent, as a catalyst and catalyst carrier, as an anticaking agent in cosmetics, and in chromatography.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a granular, porous form of silica made synthetically from sodium silicate and used as a desiccant.

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

  • n. a porous form of silica that is highly absorbent


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