geosynclinal Meaning, Definition & Usage

Ge`o*syn*cli"nal noun

Etymology

Gr. , , the earth + E. synclinal.

Definitions

1. (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.