/ Dictionary / Index U Ur: Meaning and Definition of Find definitions for: Ur Pronunciation: (ûr, oor), [key] an ancient Sumerian city on the Euphrates, in S Iraq: extensive excavations, esp. of royal tombs. ur- Pronunciation: [key] var. ofuranalysis. ur- Pronunciation: [key] var. of before a vowel: urite. ur- Pronunciation: [key] a combining form meaning “earliest, original,” used in words denoting the primal stage of a historical or cultural entity or phenomenon: ur-civilization; urtext. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ur (Thesaurus) u quark uracil Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language