n. [ Gr. ge`a, gh^, the earth + E. synclinal. ] (Geol.) the downward bend or subsidence of the earth's crust, which allows of the gradual accumulation of sediment, and hence forms the first step in the making of a mountain range; -- opposed to geanticlinal. [ 1913 Webster ]
a. [ Gr. &unr_; to incline together; sy`n with + &unr_; to incline. ] 1. Inclined downward from opposite directions, so as to meet in a common point or line. [ 1913 Webster ]
2. (Geol.) Formed by strata dipping toward a common line or plane; as, a synclinal trough or valley; a synclinal fold; -- opposed to anticlinal. [ 1913 Webster ]
☞ A downward flexure in the case of folded rocks makes a synclinal axis, and the alternating upward flexure an anticlinal axis. [ 1913 Webster ]
‖n.; pl.Synclinoria [ NL., fr. Gr. &unr_; to lay together + &unr_; mountain. ] (Geol.) A mountain range owing its origin to the progress of a geosynclinal, and ending in a catastrophe of displacement and upturning. Dana. [ 1913 Webster ]
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