focal adhesion

This term is a highly specialized technical expression used almost exclusively in cell biology and biochemistry. It describes the physical bridge between a cell's internal structural framework and its external environment, serving as a critical point for mechanical signaling and cellular movement.

Because it refers to a specific biological structure, it is used in a formal, scientific register. It is typically encountered in peer-reviewed literature regarding oncology, wound healing, or developmental biology to describe how cells anchor themselves to a surface.