/ Dictionary / Index I improvisator: Meaning and Definition of Find definitions for: im•prov•i•sa•tor Pronunciation: (im-prov'u-zā"tur, im'pru-vu-), [key] — n. a person who improvises; improviser. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. improvisation improvisatory Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language