NOTE: refers to a structure, not a process (see Sense 2)
Engineers described a horizontal band that produced a distinct demarcation two inches from the top.
This old wall is the demarcation of the original Roman settlement from later periods of construction.
The hardened lave formed a demarcation between two layers of sedimentary rock.
WordNet 3.0 Sense Numbers: 1
NOTE: refers to a process
There was a demarcation of Berlin into four sectors after World War II.
These policies are emphasizing a demarcation between the haves and have-nots.
It's an interesting book on the demarcation between metaphysics and science.
WordNet 3.0 Sense Numbers: 2