noun
delineation
dih-lin-ee-AY-shuhn/dɪˌlɪniˈeɪʃn/
A clear tracing of boundaries or distinguishing features.
The architect's careful delineation gives the building a precise exterior outline.

Etymology
Drawing something out fully in lines supplies the image behind delineation. The noun can name either a drawn representation or a description that outlines its subject in words.
In context
the line the delineation of this area these are the personal boundaries where the partner stops and you begin
More examples
- A precise delineation of responsibilities helps the team avoid confusion.
- Her essay offers a careful delineation of the differences between the two theories.
- The survey shows two possible delineations of the wetland's edge.
Forms
delineation · delineations
delineate verb — To trace, outline, or describe clearly.
Similar words
- outline
- Suggests a basic shape or summary, often without detail.
- description
- Emphasizes telling what something is like, rather than marking boundaries.
- demarcation
- Focuses on setting boundaries rather than describing distinguishing features.