Definition of polytypism in English:

polytypism

noun

Crystallography
  • See polytype

    • ‘Polytypism is a type of polymorphism wherein different polymorphs exist in different domains of the same crystal.’
    • ‘Neither the concept of polytypism nor the X-ray diffraction technique was known in Domeyko's time.’
    • ‘The polytypism in graphite manifests itself in two ways.’