Webster's Revised Unabridged Dictionary · 1913

Displacement

Displacement , noun

[Compare French déplacement.]

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.
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.
(Chemistry) 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.
Collocations (1)
Piston displacement (Mechanics) , 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.