I'm with what zenor said above.
Technically any food is "processed" - even slicing an apple is putting it through a "process". When I talk about "processed" food, however, I'm talk about food that has been chemically treated or has had additives included or things removed. Anything "lite" has been processed!
Cheese - not processed, in my book. Cheese making is a natural process ... cook milk, ferment it, strain off the whey, break up the curds, press it, age it. You can add various flavorings (molds, wines, etc.) and you can age it and you can brush it with wax or vinegar and all kinds of things ... but it's a very basic process that's been around for centuries.
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