intergradation
/ˌɪntərɡrəˈdeɪʃən/
noun
- A gradual change or transition from one form, type, or state to another, especially through a series of intermediate stages.
- The painting shows a beautiful intergradation of colors from blue to green.
- Biologists study the intergradation of species where their habitats overlap.
- The intergradation of dialects across the region makes it hard to draw a clear language boundary.