The formation of smaller grains within the grains of a metal as a result of the migration of dislocations following deformation and subsequent annealing; a similar phenomenon in other crystalline materials, such as rock and ice.
The subdivision of an area or surface into a network of polygons; the result of this.
polygonization/pəˌlɪɡənʌɪˈzeɪʃn/ /pəˌlɪɡ(ə)nʌɪˈzeɪʃn/ /ˌpɒlɪɡənʌɪˈzeɪʃn/
1940s. From polygon + -ization.