fault line

noun

Geology.

1. the intersection of a fault with the surface of the earth or other plane of reference.

fault line

noun

1. Also called: fault plane. geology the surface of a fault fracture along which the rocks have been displaced

2. a potentially disruptive division or area of contention

   Europe remains the main fault line in the Tory Party

Word History and Origins

Origin of fault line¹

First recorded in 1865–70

Example Sentences

And it might exacerbate fault lines that are already starting to show within the party.

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He cited safety concerns—the plant sits on a fault line.

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The disparities among these various cultures remain with us, he suggests, generating civic tensions along age-old political fault lines.

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Tensions are sure to mount and traditional fault lines could re-emerge.

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There have always been fault lines within the rainbow coalition.

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Related Words

• rift