Versteifung
Versteifung is a German noun meaning the act or process of making something stiff or rigid. It describes a deliberate or natural increase in rigidity of a body, component, or tissue, often to improve stability, resist deformation, or immobilize motion. Versteifung can be achieved by mechanical means (reinforcing elements), chemical or physical means (hardening, bonding), or biological processes (tissue maturation).
In medicine, Versteifung commonly refers to immobilization or fusion of bones to eliminate movement at a joint,
In engineering, Versteifung means adding stiffeners, braces, or ribs to increase a structure's resistance to bending
In biology, Versteifung is used to describe natural hardening of tissues, such as lignification of plant cell