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| slow movement of water through the pores in soil or permeable rock |
| central portion of the earth believed to be composed mainly of iron and nickel in a molten state |
| syncline (ˈsɪŋklaɪn) | |
| —n | |
| Compare anticline a downward fold of stratified rock in which the strata slope towards a vertical axis | |
| [C19: from | |
| syn'clinal | |
| —adj | |
syncline (sĭn'klīn') Pronunciation Key
(click for larger image in new window) 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. |