adjective. Sloping downward from opposite directions to meet in a common point or line.

adjective. Relating to, formed by, or forming a syncline.

Sloping downward in opposite directions so as to meet in a common point or line.

In geology, dipping, as strata in any particular district or locality, toward one another on each side of the axis of the fold: the opposite of anticlinal. Compare cut under axis, 9.

noun. A synclinal fold, line, or axis.

adjective. Inclined downward from opposite directions, so as to meet in a common point or line.

adjective. Formed by strata dipping toward a common line or plane

noun. A synclinal fold.

adjective. Describing a torsion angle between 30° and 90°

adjective. sloping downward toward each other to create a trough

"In addition to this technical difficulty, it was found that the Devonian synclinal, which is the geologic substructure of the region was disturbed by a tectonic anomaly in the form of a narrow band, less than one kilometer in width, which had become deflected in front of the Longlier valley, passing just under the terminal point where the construction of the railroad had stopped."

synclinal axis  synclinal valley