What does BUO stand for?

Beaumont, CA - Location identifier - FAA (FAAL)

Bilateral Ureteral Obstruction - Medicine (MELL)

Bilirubin of Unknown Origin - Gastroenterology (DAVI)

Biunoctium - Chemical element (EPT)

Bleeding - or Bruising of Undetermined Origin - Medicine

Buin - Language code (ETLW)

Bullet Boats, Seaside Park, NJ - Manufacturer code for watercraft hull identification number (USCG)

Burao - Somalia - Airport symbol (OAG)

Bureau - Telegraphy (PCTE)

Burgham - NCIC firearms make code (NCIC)