/ Dictionary / Index S sanguineous: Meaning and Definition of Find definitions for: san•guin•e•ous Pronunciation: (sang-gwin'ē-us), [key] — adj. of, pertaining to, or containing blood. of the color of blood. involving much bloodshed. sanguine; confident. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sanguineous (Thesaurus) sanguine sanguinolent Related Content Daily Word Quiz: meritocracy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language