/ Dictionary / Index V vacua: Meaning and Definition of Find definitions for: vac•u•a Pronunciation: (vak'y-u), [key] — n. a pl. of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vacua (Thesaurus) vacillatory vacuity Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language