DISPLACEMENT n.
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. Piston displacement (Mech.), the volume of the space swept through, or weight of steam, water, etc., displaced, in a given time, by the…
DISULPHURIC a.
, a thick oily liquid, H2S2O7, called also Nordhausen acid (from Nordhausen in the Harts, where it was originally manufactured), fuming sulphuric acid, and especially pyrosulphuric acid. See under Pyrosulphuric.
DOCK n.
The place in court where a criminal or accused person stands. Balance dock, a kind of floating dock which is kept level by pumping water out of, or letting it into, the compartments of side chambers. -- Dry dock, a dock from which the water may be shut or pumped out, especially, one in the form of a chamber having wal…
DOLLY n.
A child's mane for a doll. Dolly shop, a shop where rags, old junk, etc., are bought and sold; usually, in fact, an unlicensed pawnbroker's shop, formerly distinguished by the sign of a black doll. [England]