/ Dictionary / Index D decubitus: Meaning and Definition of Find definitions for: de•cub•i•tus Pronunciation: (di-ky'bi-tus), [key] — pl. -tus. any position assumed by a patient when lying in bed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decubitus (Thesaurus) decrypt decubitus ulcer Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language