Alternative forms 
First recorded c.1752, from Spanish linea de demarcacion and/or Portuguese linha de demarcação, the demarcation line laid down by the Pope on May 4, 1493, dividing the New World between Spain and Portugal on a line 100 leagues west of the Cape Verde Islands. Both derive from demarcar, from de- + marcar (“to mark”), from Italian marcare, from the Germanic root of march.
demarcation (plural demarcations)
- The act of marking off a boundary or setting a limit, notably by belligerents signing a treaty or ceasefire.
- A limit thus fixed, in full demarcation line.
- Any strictly defined separation
- There is an alleged, in fact somewhat artificial demarcation in the type of work done by members of different trade unions.
Derived terms 
Related terms 
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