/ Dictionary / Index S Signac: Meaning and Definition of Find definitions for: Si•gnac Pronunciation: (sē-nyak'), [key] 1863–1935, French painter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. signable signage Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language