The meaning of the Acronym OG is...

OG is

• Zero Gravity
• Oxygen Gage
• Outer Gimbal (Roll)

More Meanings For OG:

• Original Gravity
• Organic Gardening
• Optimal Guess
• Observational Game
• Orientation Group
• Oriental Grill
• Operating Grant
• Ogden Corporation
• Original Gangster
• Original Gangsta
• Old Guy
• Organ Grinder
• Old Girl
• Old Gangster
• Old Gorgeous

OG is also in:

• Astronomy
• Botany
• Famous
• Firms
• General
• Mathematics
• NYSE Symbols
• Physics
• Positions