Syncline definition

sĭnklīn
A fold in rocks in which the rock layers dip inward from both sides toward a central line.
noun
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(geol.) A down fold in stratified rocks from whose central axis the beds rise upward and outward in opposite directions.
noun
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A fold of rock layers that slope upward on both sides of a common low point. Synclines form when rocks are compressed by plate-tectonic forces. They can be as small as the side of a cliff or as large as an entire valley.
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(geology) A concave-upward fold in rock strata.
noun
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Other Word Forms

Noun

Singular:
syncline
Plural:
synclines

Origin of syncline

  • Back-formation from synclinal

    From American Heritage Dictionary of the English Language, 5th Edition

  • syn- +"Ž -cline

    From Wiktionary