+**Fcd** (slug: fcd) represents a crucial point of [Transition](/wiki/transition), where an existing state undergoes profound alteration. It signifies a fundamental [Shift](/wiki/shift) that redefines parameters, often leading to new understanding or configuration.
+## See also
+- [Alteration](/wiki/alteration)
+- [Cycle](/wiki/cycle)
+- [Threshold](/wiki/threshold)