allotropism

/əˈlɑtrəˌpɪzəm/
noun
  1. The property of a chemical element existing in two or more different physical forms.
    • Allotropism in carbon explains why diamonds are hard and graphite is soft.
    • Students learned about allotropism when studying the different forms of sulfur.
    • The allotropism of oxygen is important for understanding the ozone layer.
Synonyms
What does "allotropism" mean? | whatsthatwordmean | whatsthatwordmean