Unfolding definitions without hiding cycles

How can a vocabulary be unfolded through its own definitions without concealing circularity?

Formülasyon

Expose definitions that reuse other defined objects, and compare compact names with recursively substituted forms.

Gerilim

Unfolding can clarify a concept or merely move its circularity out of sight.

Açık soru

What marks an unresolved cycle, and when is a cycle a valid recursive definition?