/ Dictionary / Index D dolerite: Meaning and Definition of Find definitions for: dol•er•ite Pronunciation: (dol'u-rīt"), [key] — n. Petrol. a coarse-grained variety of basalt. any of various other igneous rocks, as diabase. any basaltlike igneous rock whose composition can be determined only by microscopic examination. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. doleful dolesome Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language