/ Dictionary / Index D decumbent: Meaning and Definition of Find definitions for: de•cum•bent Pronunciation: (di-kum'bunt), [key] — adj. lying down; recumbent. (of stems, branches, etc.) lying or trailing on the ground with the extremity tending to ascend. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decumbent (Thesaurus) decuman decuple 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