Regardless that it refers to something. A sign without a referent is just a word.That doesn't make any difference. If I wrote down a number on a piece of paper, than number is either even or odd, regardless of whether I show it to you.
Trust me, we are both implicitly defining atheism with how we use the term."My definition of atheism is x."
"I disagree. The definition of atheism is actually x."
"But, that's the same definition I just gave."
"It can't be the same definition, because I disagreed with you!"
Else, you would agree with me that whether one is ignorant of gods, denies god-claims, or simply understands the case of "no god," the claim of atheism is that there is no god.
I cannot fail to state a position of my own with the use of words. The point is whether you believe that "beliefs" are things that can be "lacking" from a person's schema. If you do, then is atheism that belief (statement? state?) absent from them, or is it (more meaningfully) about yourself, and not about them?You're not negating someone ELSE'S belief, you're stating a position of your own.