1the action of moving something from its place or position:vertical displacement of the shoreline [count noun]:a displacement of the vertebra at the bottom of the spine the removal of someone or something by someone or something else which takes their place:males may be able to resist displacement by other males the enforced departure of people from their homes, typically because of war, persecution, or natural disaster:the displacement of farmers by guerrilla activity [count noun] the amount by which a thing is moved from a position:a displacement of 6.8 metres along the San Andreas fault 2the occupation by a submerged body or part of a body of a volume which would otherwise be occupied by a fluid. the volume or weight of fluid that would fill the volume displaced by a floating ship, used as a measure of the ship’s size:the submarine has a surface displacement of 2,185 tons technical the volume swept by a reciprocating system, as in a pump or engine: [as modifier]:a fixed displacement gear 3 Psychoanalysis the unconscious transfer of an intense emotion from one object to another:this phobia was linked with the displacement of fear of his father
4 Physics the component of an electric field due to free separated charges, regardless of any polarizing effects. the vector representing such a component. the flux density of such an electric field.