intergrowth

This term is primarily used in technical registers, specifically within geology, mineralogy, and botany. It describes a physical state of fusion where distinct entities lose their individual boundaries to form a single, complex structure. In a geological sense, it often refers to the microscopic interlocking of crystals, which provides clues about the cooling history of a rock.

While the word can describe a process, it most frequently refers to the resulting physical arrangement. It is distinct from simple mixing or layering, as it implies a structural integration that occurs during the growth phase of the materials involved.