/ Dictionary / Index D Dolby: Meaning and Definition of Find definitions for: Dol•by Pronunciation: (dōl'bē, dôl'-), [key] — Trademark. Trademark. a brand of system for reducing high-frequency noise in audiotape using various electronic devices during recording and playback. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dolby (Thesaurus) dolabriform dolce Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language