/ Dictionary / Index S Siqueiros: Meaning and Definition of Find definitions for: Si•quei•ros Pronunciation: (sē-kā'rôs), [key] 1896–1974, Mexican painter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: siqueiros (Thesaurus) si quaeris peninsulam amoenam, circumspice* sir Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language