/ Dictionary / Index D decan: Meaning and Definition of Find definitions for: dec•an Pronunciation: (dek'un), [key] — n. Astrol. any of three divisions of 10° within a sign of the zodiac. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decamp decanal Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language