Chemistry, Natural sciences, Physical sciences Having or relating to a torsion angle between 30° and 90°
2
Inclined downward from opposite directions, so as to meet in a common point or line.
The doctor's eyebrows had gone synclinal from puzzlement without his awareness.1996, David Foster Wallace, Infinite Jest […], Boston, Mass.; New York, N.Y.: Little, Brown and Company, →ISBN, page 75:
3
Geography, Geology, Natural sciences Formed by strata dipping toward a common line or plane.
But being chiefly sections of younger rocks than ours, the Austrian diagrams exhibit a more disturbed surface, so far as regards faults and slips, snapped anticlinals, upshoved synclinals, lapped folds, […]1865, Proceedings of the American Philosophical Society, page 195: