User blog comment:Godisme/Everything But The Rain Op. 2 "The Rudiments"/@comment-4794735-20130306172742/@comment-4794735-20130307040620

I don't consider that a good enough answer because, frankly, we've yet to see a Zanpakuto, more specifically, an Asauchi being formed aside from Ichigo's.

I guess a better way to say what I meant would be "Is Zangetsu a Spirit Weapon with all properties of a Zanpakuto but still not a Zanpakuto?"

Then again, Arrancar have Zanpakuto as well and theirs aren't formed from an Asauchi, but rather their sealed Hollow power, so maybe I'm reading too far into the exact definition of "Zanpakuto".