[jasim]

I for one haven't. Isomorphism as a word is used not just in Maths where it has a precise meaning, but in other subjective contexts as well. At a general enough level, it denotes some kind of structural similarity between two objects, not just a clear one-to-one mapping. Web development is not mathematics and so we can have different definitions for words, and this is unfortunately the best we have to convey this particular idea. ('universal', to my taste, is too broad and confusing)