geosyncline

play
noun geo·syn·cline \ˌjē-ō-ˈsin-ˌklīn\

Definition of geosyncline

  1. :  a great downward flexure of the earth's crust

geosynclinal

play \ˌjē-ō-ˌsin-ˈklī-nəl\ adjective

1895

First Known Use of geosyncline

1895


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feeling or affected by lethargy

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