- a thrust in an upward direction.
- a sudden and forceful upward movement, as of a nation's economy or the stock market: Market observers are hoping the upthrust can be sustained.
- Geology. an upheaval.
- to thrust upward: Frost caused the ground to upthrust.
Origin of upthrust
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for upthrust
The dot at the center is not elongated enough to be considered an upthrust.
Figure 149 is a tented arch because of the upthrust present at the center of the pattern.
The tented arch is directly beneath the innermost loop, and is of the upthrust type.
This pattern must be classified as a loop, as a dot may not be considered an upthrust unless elongated vertically.
Figure 327 is a tented arch, not because of the dot, however, as it cannot be considered an upthrust.
- an upward push or thrust
- geology a violent upheaval of the earth's surface
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012