What does BUB stand for?

Backup Block (MCD)

Battle Update Briefs (MLEX)

Biunbium - Chemical element (EPT)

Bua - Language code (ETLW)

Bubble (KSC)

Buchberg - Switzerland - Seismograph station code, US Geological Survey (SEIS)

Budding Uninhibited by Benzimidazole - Cytology

Burroughs Boats, El Campo, TX - Manufacturer code for watercraft hull identification number (USCG)

Burwell, NE - Location identifier - FAA (FAAL)