/ Dictionary / Index Q quartz lamp: Meaning and Definition of Find definitions for: quartz' lamp" Pronunciation: [key] a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quartzite quartz movement Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language