Definitions

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

  • n. A white or light-colored zeolite, NaAlSi2O6·H2O, found in certain basalts.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mineral, a sodium aluminosilicate with a chemical formula NaAlSi2O6·H2O, having a zeolite structure, found in alkaline basalts.

from the GNU version of the Collaborative International Dictionary of English

  • n. A white or flesh-red mineral, of the zeolite family, occurring in isometric crystals. By friction, it acquires a weak electricity; hence its name.

Etymologies

French, from Greek analkimos, weak (from its weak electric power) : an-, not; see a-1 + alkimos, brave (from alkē, strength).
(American Heritage® Dictionary of the English Language, Fourth Edition)
Named in 1801 after the property of attaining weak electricity when heated or subjected to friction, from the Greek word meaning "weak", ἀνάλκιμος (analkimos). (Wiktionary)

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