Bible Dictionaries
Pegmatite

Webster's Dictionary

(1):

(n.) More generally, a coarse granite occurring as vein material in other rocks.

(2):

(n.) Graphic granite. See under Granite.

Bibliography Information
Webster, Noah. Entry for 'Pegmatite'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/pegmatite.html. 1828.