demarcation Meaning, Definition & Usage

  1. noun the boundary of a specific area
    limit; demarcation line.
  2. noun a conceptual separation or distinction
    line; dividing line; contrast.
    • there is a narrow line between sanity and insanity

WordNet

De`mar*ca"tion noun
Etymology
F. démarcation; pref. dé- (L. de) + marquer to mark, of German origin. See Mark.
Definitions
  1. The act of marking, or of ascertaining and setting a limit; separation; distinction.
    The speculative line of demarcation, where obedience ought to end and resistance must begin, is faint, obscure, and not easily definable. Burke.

Webster 1913