Bible Dictionaries
Diabase

Webster's Dictionary

(n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; - often limited to rocks pretertiary in age. It includes part of what was early called greenstone.

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