geanticline

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A large upward fold of the earth's crust.

Century Dictionary and Cyclopedia

1. n. In geology, an anticlinal or arching fold which involves a great thickness of strata and affects a large area; a broad dome formed by the warping of the earth's crust.

Wiktionary

1. n. geology, geography A large-scale anticline; a large upward lift in the earth's surface.