What does UO stand for?

Direct Air - ICAO designator (AD)

Trans-Union (SAUS)

Undefinitized Option - Defense Logistics Agency (MLEX)

Undelivered Orders - Army (AABC)

Undetermined Origin (DAVI)

Und Oefters - And Often - German

Union Office (ROG)

Union Railroad of Oregon - AAR code

Unit Operation (SAUS)

Unit Operator (NRCH)

University of Oregon

University of Osaka (SAUS)

University of Otago (SAUS)

University of Oulo (SAUS)

University of Oxford (ROG)

Unusual Occurrence (SAUS)

Ureteral Orifice - Anatomy (MAE)

Urinary Output - Medicine

Urnkehrosmose (SAUS)

Users Office (SAUS)

Utilization Officer (SAUS)

Weber County Library, Ogden, UT - Library symbol - Library of Congress (LCLS)