Catholic Scientist writes:
I understand what atheism is. You seem to be the one who doesn't understand. Here's the definition:
atheism
1. Disbelief in or denial of the existence of God or gods.
2. The doctrine that there is no God or gods.
-Godlessness; immorality.
Please tell us where you found that definition. Did you by chance add the last line as a personal comment of your belief? If so, it is misleading to imply that it is part of the definition.
I think you need to reference this one.