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

  • n. A salt that is derived from both boric acid and silicic acid and occurs naturally in dumortierite.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of various minerals whose structure is formally that of a dual salt of boric and silicic acids.

from the GNU version of the Collaborative International Dictionary of English

  • n. A double salt of boric and silicic acids, as in the natural minerals tourmaline, datolite, etc.

from The Century Dictionary and Cyclopedia

  • n. A double salt, in which both boric and silicic acids are combined with a basic radical, as datolite, which is a borosilicate of calcium. Also called silicoborate.

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

  • n. a salt of boric and silicic acids


Sorry, no etymologies found.



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  • A type of glass in which the flux is boric oxide instead of alkali. The first borosilicate glass was created by Otto Schott in 1882. It has a low coefficient of expansion so it can withstand sudden temperature changes.

    November 9, 2007