/ Dictionary / Index S sinuation: Meaning and Definition of Find definitions for: sin•u•a•tion Pronunciation: (sin"y-ā'shun), [key] — n. a winding; sinuosity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sinuate Sinuiju 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