/ Dictionary / Index U ubiquitous: Meaning and Definition of Find definitions for: u•biq•ui•tous Pronunciation: (y-bik'wi-tus), [key] — adj. existing or being everywhere, esp. at the same time; omnipresent: ubiquitous fog; ubiquitous little ants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ubiquitous (Thesaurus) ubiquitin ubiquity Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language