/ Dictionary / Index D DNase: Meaning and Definition of Find definitions for: DNase Pronunciation: (dē'en'ās, -āz), [key] deoxyribonuclease: any of several enzymes that break down the double-stranded or single-stranded DNA molecule into its component nucleotides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. DNA probe DNA virus Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language