What does A/O mean?

Looking for the full meaning of A/O? From the following image, you can find out all definitions of A/O. If you want, you can also download image file to print.

What does ao stand for

A/OAccounting Only
A/OAlert and Oriented
A/OAnalog Output
A/OArea of Operations
A/OAs Of
A/OAt Once
A/OAtomic Weight Percent