The upward force produced when an object is immersed in a liquid or gas.

A force called upthrust acts upwards on any object in a fluid. Upthrust arises because the pressure in a fluid increases with depth. Even objects that sink experience the force of upthrust. Floating and Sinking

The force pushing against an object which is suspended in liquid or gas and which causes it to float

A thrust in an upward direction. Used to indicate buoyancy. Weight of water displaced.

an upward movement of part of the earth's crust. [AHDOS