0.8µm CMOS design means the design follows the model file defined by a fab lab, which can work for 0.8µm feature size. Or u can say that 0.8µm feature size is the minimum dimention that can be drown by a fab lab.
Actually, it is the minimum transistor channel length you can draw in that technology.
So, it is referring to polysilicon width over active, not to other geometries.