McBell
Unbound
*facepalm*Here's another, more generic definition (and more accurate in my opinion) of atheism and atheist.
1. An atheist is a person who holds the view of atheism.
2. Atheism is a view held by an atheist.
Now, the finer details of what this atheism view is, that's where the passive/active voice of belief comes in, but not before.
That resolves the problem of Universe being an atheist as well as ova, sperm, inoculated cells, fetus, and new born also can be removed as default atheistic. They're not a "person holding the view of atheism", as of yet.
Belief in not X, or not belief in X, only differs as much as passive and active voice of unbelief. But they're both still held in a view by a person, actively held by a person.
your presented definition is of no assist.