Definitions

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

  • n. An orthorhombic mineral form of crystalline calcium carbonate, dimorphous with calcite.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A saline evaporite consisting of anhydrous calcium carbonate with the chemical formula CaCO3; it is dimorphous with calcite.

from the GNU version of the Collaborative International Dictionary of English

  • n. A mineral identical in composition with calcite or carbonate of lime, but differing from it in its crystalline form and some of its physical characters.

from The Century Dictionary and Cyclopedia

  • n. Calcium carbonate crystallizing in the orthorhombic system.

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

  • n. a mineral form of crystalline calcium carbonate; dimorphic with calcite

Etymologies

After Aragon .
(American Heritage® Dictionary of the English Language, Fourth Edition)
Aragon +‎ -ite, after the province in Spain, named by Abraham Gottlob Werner in 1790. (Wiktionary)

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