Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an intrusive igneous rock similar to granite, but containing more plagioclase than potassium feldspar.

from The Century Dictionary and Cyclopedia

  • n. A phanerocrystalline rock intermediate in composition between granite and quartz-diorite: nearly the same as quartz-monzonite.

Etymologies

granite +‎ diorite (Wiktionary)

Examples

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