The meaning of the Acronym O is...

O is

• Oort
• Out
• Omicron

More Meanings For O:

• Object file ( Unix - Atari - GCC)
• Object
• Overclocking
• Output
• Online
• Output
• Operator
• Oxygen
• Output
• Operating
• Off
• form O solenoid (actuator Only, no contacts)
• Octant
• Obliqueness
• Oxygen

O is also in:

• Chemistry
• Electronics
• File Extensions
• General
• Mathematics
• Meteorology
• Networking
• Software
• Telecom