verb (used with object), de·mar·cat·ed, de·mar·cat·ing.
- to determine or mark off the boundaries or limits of: to demarcate a piece of property.
- to separate distinctly: to demarcate the lots with fences.
- to mark, fix, or draw the boundaries, limits, etc, of
- to separate or distinguish between (areas with unclear boundaries)
1816, back-formation from demarcation. Related: Demarcated; demarcating.