D defs.my
Entry 3 senses Webster, 1913

Displacement

/dĭs-plās'-mənt/ · Dis·place·ment · IPA /dɪsˈpleɪsmɪnt/
01 n. The act of displacing, or the state of being displaced; a putting out of place.
  1. 1.
    The act of displacing, or the state of being displaced; a putting out of place.
    “Unnecessary displacement of funds.” — A. Hamilton.
    “The displacement of the sun by parallax.” Whewell.
  2. 2.
    The quantity of anything, as water, displaced by a floating body, as by a ship, the weight of the displaced liquid being equal to that of the displacing body.
  3. 3.
    The process of extracting soluble substances from organic material and the like, whereby a quantity of saturated solvent is displaced, or removed, for another quantity of the solvent.(Chem.)
Phrases & compounds
Piston displacement — the volume of the space swept through, or weight of steam, water, etc., displaced, in a given time, by the piston of a steam engine or pump.