Pronunciation: (ûr, oor), [key]
an ancient Sumerian city on the Euphrates, in S Iraq: extensive excavations, esp. of royal tombs.
var. of uro- 1 : uranalysis.
var. of uro- 2 before a vowel: urite.
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.