Meaning & use

demarcation line

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UK/ˌdiːmɑːˈkeɪʃn laɪn/
US/ˌdiːmɑːrˈkeɪʃn laɪn/

Meanings

  1. phrasecountable

    A physical boundary that marks the edge of an area or the division between two areas.

    Grammar: Often used with 'the': the demarcation line between the two countries.

    Patterns

    • the demarcation line between A and B
    • a demarcation line along something

    The river forms a natural demarcation line between the two provinces.

    A demarcation line was drawn on the map to separate the farms.

    Soldiers patrolled the demarcation line to prevent crossings.

  2. phrasecountablefigurative

    A figurative boundary that separates different responsibilities, ideas, or groups.

    Grammar: Often used in discussions about roles or concepts: the demarcation line between work and home.

    Patterns

    • the demarcation line between A and B
    • draw a demarcation line

    There is a clear demarcation line between the manager's duties and the staff's.

    The debate blurred the demarcation line between fact and opinion.

    Parents often struggle to draw a demarcation line between helping and controlling.

Word forms

pluraldemarcation lines

Common combinations

clear demarcation line
The contract sets a clear demarcation line between the two roles.
cross the demarcation line
Anyone who crosses the demarcation line will be stopped.
draw a demarcation line
The treaty drew a demarcation line through the valley.
demarcation line between
The demarcation line between the two districts is a stone wall.

Synonyms and how they differ

boundary
Boundary is a general word for any line that marks a limit; demarcation line is more formal and often suggests an official or visible division.
border
Border usually refers to a line between countries or regions; demarcation line can also be used figuratively for responsibilities.
dividing line
Dividing line is similar but less formal; demarcation line is common in official or technical contexts.

Word family

demarcate verb
To mark or establish the limits of something.
demarcation noun
The act of setting a boundary or the boundary itself.

Commonly confused: demarcation line or demarcation?

demarcation line vs demarcation

Demarcation is the noun for the act or process of setting boundaries; a demarcation line is the actual line itself.

Practice

The peace agreement established a ______ between the two warring sides.

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