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• n  (geology) a rise of land to a higher elevation (as in the process of mountain building)

• Sometimes their upthrust is accelerated when a rich man dies, leaves a legacy.
• On primary election day last week the sun shone April-fresh on Philadelphiaclear and mild on the bright brass knockers and white Georgian lintels, on the upthrust fingers of .
• The impact is great enough to give the whole body an upthrust.

• upheaval
• uplift
• upthrow