Semmantics; God (un)defined

[The Amazing Mr. Tommyos!]

Does anyone have an understanding of the semmantic argument for atheism?
The argument that says something along the lines of god is not defined, so it can't possibly exist?

Anything?
It interests me, and seems to be the most convincing, from what little I know.  

[Dathu]

Are you reffering to the argument of the inability of the infinate to exists?  

[The Amazing Mr. Tommyos!]

Dathu

Are you reffering to the
argument of the inability of the infinate to exists?

Not so much.
I'm refering to the argument that states god cannot exist because he is undefined. He has secondary properties, but no prime qualities. Something along those lines.

I don't know much about it, and I was hopeing someone here did. xd