SQUARE n.
oidered. [Obs.] Shak. Geometrical square. See Quadrat, n., 2. -- Hollow square (Mil.), a formation of troops in the shape of a square, each side consisting of four or five ranks, and the colors, officers, horses, etc., occupying the middle. -- Least square, Magic square, etc. See under Least, Magic, etc. -- On the s…
SULPHUR n.
ostrum. -- Sulphur base (Chem.), an alkaline sulphide capable of acting as a base in the formation of sulphur salts according to the old dual theory of salts. [Archaic] -- Sulphur dioxide (Chem.), a colorless gas, SO2, of a pungent, suffocating odor, produced by the burning of sulphur. It is employed chiefly in the pr…