n. A saline evaporite consisting of anhydrous calcium carbonate with the chemical formula CaCO3; it is dimorphous with calcite.
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.
The Century Dictionary and Cyclopedia
n. Calcium carbonate crystallizing in the orthorhombic system.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a mineral form of crystalline calcium carbonate; dimorphic with calcite
Word Usage
"They wandered through the Big Room, mesmerized by the translucent, calcite soda straws in the Doll's Theater, transfixed by threads of aragonite — sharp as needles — that spun around The Temple of the Sun."