/ Dictionary / Index D decuple: Meaning and Definition of Find definitions for: dec•u•ple Pronunciation: (dek'yoo-pul), [key] — adj., n., v., -pled, -pling. —adj. ten times as great; tenfold. —n. a tenfold quantity or multiple. —v.t. to make ten times as great. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decumbent decurion Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language