alg. sem.] Of a semiotic morphism, the extent to which it preserves the structure of its source system. A high-quality semiotic morphism should map sorts to sorts, constructors to constructors, and so on while preserving levels, priorities, and axioms. Due to constraints in the design space, though, it is often impossible to preserve all such structure. For this reason and because priorities are subjective, one cannot expect there to be a single "best" semiotic morphism.