noun
: a light-colored intrusive rock having the quartz crystals so arranged in the feldspar as to appear in a transverse section like written characters — called also Hebraic granite, pegmatite, runite
noun
: a light-colored intrusive rock having the quartz crystals so arranged in the feldspar as to appear in a transverse section like written characters — called also Hebraic granite, pegmatite, runite
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012