sync-line

syncline

[sing-klahyn, sin-]
noun Geology.
a synclinal fold.

Origin:
1870–75; back formation from synclinal

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Collins
World English Dictionary
syncline (ˈsɪŋklaɪn)
 
n
Compare anticline a downward fold of stratified rock in which the strata slope towards a vertical axis
 
[C19: from syn- + Greek klīnein to lean]
 
syn'clinal
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
syncline   (sĭn'klīn')  Pronunciation Key 


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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. Compare anticline.
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