Definitions

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

  • n. A fine-grained metamorphic rock often banded in appearance and composed chiefly of feldspar, quartz, and garnet.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A fine-grained metamorphic rock composed chiefly of feldspar, quartz, and garnets

from the GNU version of the Collaborative International Dictionary of English

  • n. A whitish, granular rock, consisting of feldspar and quartz intimately mixed; -- sometimes called whitestone, and leptynite.

from The Century Dictionary and Cyclopedia

  • n. A rock often having a parallel or foliated structure like that of gneiss, and consisting mainly of quartz and feldspar, together with red garnets, which are usually of very diminutive size.

Etymologies

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