More on Urbi et Orbi from Infoplease:

• urbi et orbi: meaning and definitions - urbi et orbi: Definition and Pronunciation
• Urbi et Orbi - Urbi et Orbi [To Rome and the rest of the world]. A form used in the publication of Papal bulls. ...
• Dictionary Index - Dictionary Index Uns unsaddle unsafety unsaid unsanitary unsatisfactory unsaturated unsavory ...
• Dictionary of Phrase and Fable: U - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "U"