What does O/B stand for?

Your abbreviation search returned 83 meanings

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Rank Abbr.	Meaning
OB	Out (of the) Blue
O/B	On Behalf
O/B	On Board

OB	Obstetrics
OB	Obligation
OB	On Board
OB	Obsolete
OB	Old Boy
OB	Observatory
OB	Out of Business
OB	Oberbürgermeister (German: mayor of a larger city)
Ob	Obligatory
OB	Obedience

OB	Outboard
OB	Outward Bound
OB	Ocean Beach (California)
OB	Oboe
OB	Outside Broadcast
OB	Oak Bluffs (Massachusetts)
OB	Open Bottle (chemistry)
OB	Over Board
OB	Order of Battle
OB	Open Box
OB	Oingo Boingo (band)
OB	Oskar Blues (brewery; Colorado)
OB	Operating Base (US Navy)
OB	Octave Band
OB	Open Box (gaming clan)
OB	Old Babylonian
OB	Oh Baby
OB	Oberkommandierender (German CINC)
OB	Occult Blood
OB	Out of Bounds (National Park Service or golf slang)
OB	Ogre Battle (game)
OB	Olfactory Bulb
OB	Oil-Based
OB	Oberkommando (German: High Command)
OB	Ohne Befund (German: Results Negative)
OB	Observatoire de Besançon
OB	Ohne Binde (German: without a pad; tampon brand)
OB	Official Business
OB	Operating Budget
OB	Orlando Bloom (actor)
OB	Over Burden (mining)
OB	Obex (neuroanatomy, part of brain)
OB	Opening Balance (financial management)
OB	Outcast Bandicoot (fanfiction)
OB	Obliterative Bronchiolitis
OB	Ordnance Battalion (US Navy)
OB	Ophodni Brod (Croatian: patrol boat)
OB	Optical Bench
OB	Old Bill (UK police)
OB	Open Burning (outdoor fire regulation)
OB	Onlinebandit (gamesite)
OB	Organization Behaviour
OB	Off Break (cricket)
O/B	Octanol/Buffer (biopharmaceuticals)
OB	Operation Battleaxe (gaming)
OB	Ossewa Brandwag
OB	Old Bastard
OB	Operational Base (various locations)
OB	Overbought (stock market)
OB	Outer Beings (gaming)
OB	Oversight Board
OB	Outstanding Balance
OB	Ordnance Board (US Navy)
OB	Oxbridge (summer program)
OB	Official Building
OB	Odense Boldklub (Danish soccer club)
OB	Operation Barnabas
OB	Optical Branch
OB	Outlet Box (electrical)
OB	Office of Budget
OB	Original Budget
OB	Open Billing
OB	Outdoor Broadcasting
OB	Ordinary Break (railway defect)
O/B	Oxymorphone-Bupivacaine (drug combination)
OB	Organization Block
OB	Outbye (mining)
OB	Ossewa Brandwag (Ox-Wagon Guard)