/ Dictionary / Index D day-by-day: Meaning and Definition of Find definitions for: day-by-day Pronunciation: (dā'bī-dā'), [key] — adj. taking place each day; daily: a day-by-day account. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: day-by-day (Thesaurus) daybreak day camp Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language