the action of displacing or process of being displaced

the volume or weight of a fluid, e.g. water, displaced by a body, e.g. a ship, of equal weight floating in it, used as a measure of the ship's size

the difference between the initial position of a body and any later position

the volume displaced by a piston in a pump or engine, or the total volume so displaced by all the pistons in an internal-combustion engine

in psychoanalysis, the transfer of emotions from the object that orig evoked them to a substitute, e.g. in dreams