Okay, I'm on my phone so I apologize for not being able to quote or post links and such, but anyway... Here's the thing, I'm not redefining anything. Likewise, neither are you. The problem is simply that we're using different definitions. This is a common problem, and it is precisely what I was referring to when I stated that I hate getting into the atheist/agnostic distinction. You pointed to a source which uses your definitions, great!... I agree that the terms are popularly used that way. Likewise, they are popularly used in the way I've described (and, ironically, I could point you right back to Wikipedia to see my exact definitions). It is unfortunate that there is this imprecision in the language surrounding this subject, but it's there. On the plus side, we've both been able to understand each other clearly and we both know what the other means -- which is better than the usual result in these discussions, so hey -- not too shabby, lol.
Language is slippery. The dictionary does not set definitions for words, rather, it describes how they are used. Often words are used differently by different groups of people. I can tell you (for what little it may be worth) that I've read and been involved in this subject quite heavily. The definitions I gave are widely used and accepted as the appropriate ones.
To condense my definitions:
1. Theism - the belief in a supernatural god.
2. Antitheism - the belief that there are no supernatural gods.
Atheism - the rejection of #1.
Agnosticism - the rejection of both #1 and #2.
Note that atheism rejecting #1 is NOT the same as atheism embracing #2. That position is, by definition, antitheism.
These definitions are very widely used in today's world. You may like your definitions better, but I want you to see they they are not the only, and very likely not the commonest usages.
It really has been great and interesting discussing this with you by the way, thanks for indulging me!