upthrust
nounUK /ˈʌp.θrʌst/
US /ˈʌp.θrʌst/
An upthrust is a strong push that makes something go up.
The upthrust of the water helped the beach ball float to the top.
SYNONYMS
OTHER MEANINGS
2. In geology, an upthrust is when rock is pushed upward by forces inside the Earth.
The mountain was formed by a huge upthrust of rock.
3. An upward thrust or push of any kind.
The rocket's upthrust lifted it off the ground.
4. The upward force a liquid or gas puts on an object placed in it.
The upthrust from the water made the boat stay afloat.