from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a gray-white mineral inosilicate hydroxide of calcium and sodium that crystallizes in the triclinic system, with the chemical formula NaCa2Si3O8(OH).
from the GNU version of the Collaborative International Dictionary of English
- n. A whitish mineral occurring in radiated or fibrous crystalline masses. It is a hydrous silicate of lime and soda.
from The Century Dictionary and Cyclopedia
- n. A hydrous silicate of calcium and sodium occurring in radiated or stellate fibrous masses of a white or grayish color.
Sorry, no etymologies found.