The meaning of the Acronym OoO is...

OoO is

• Obligatory Other Option
• Out Of Office

More Meanings For OoO:

• Out Of Order
• Open Office. Org
• Obligatory Other Option
• Out Of Office
• Oscuro's Oblivion Overhaul
• Outside Of the Object
• Out Of Order
• Out Of Office
• Object Oriented Ogonkify
• Onsite Offsite And Offshore
• Out Of Options
• Out Of Order Once
• Off On One
• Ozonated Olive Oil

OoO is also in:

• Electronics
• Firms
• General
• Hardware
• Military
• SMS
• Software
• Sports
• Unfiled