Definitions

from The Century Dictionary.

  • noun Sandstone; gritstone.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A species of micaceous sandstone.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy Any sandstone, but most often a metamorphosed rock unit with a dominantly sandstone protolith.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek ψάμμος and -ite.

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