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octahedra, or in monoclinic prisms, the former of which is the more stable at ordinary temperatures.
Sulphur is the type, in its chemical relations, of a group of elements, including selenium and tellurium,
called collectively the sulphur group, or family. In many respects sulphur resembles oxygen.
2. (Zoöl.) Any one of numerous species of yellow or orange butterflies of the subfamily Pierinæ; as, the
clouded sulphur (Eurymus, or Colias, philodice), which is the common yellow butterfly of the Eastern
United States.
Amorphous sulphur (Chem.), an elastic variety of sulphur of a resinous appearance, obtained by
pouring melted sulphur into water. On standing, it passes back into a brittle crystalline modification. —
Liver of sulphur. (Old Chem.) See Hepar. — Sulphur acid. (Chem.) See Sulphacid. — Sulphur
alcohol. (Chem.) See Mercaptan. — Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, — formerly a famous nostrum. — 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 production of sulphuric acid, and
as a reagent in bleaching; — called also sulphurous anhydride, and formerly sulphurous acid. — Sulphur
ether (Chem.), a sulphide of hydrocarbon radicals, formed like the ordinary ethers, which are oxides,
but with sulphur in the place of oxygen. — Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
— Sulphur showers, showers of yellow pollen, resembling sulphur in appearance, often carried from
pine forests by the wind to a great distance. — Sulphur trioxide (Chem.), a white crystalline solid,
SO3, obtained by oxidation of sulphur dioxide. It dissolves in water with a hissing noise and the production
of heat, forming sulphuric acid, and is employed as a dehydrating agent. Called also sulphuric anhydride,
and formerly sulphuric acid. — Sulphur whale. (Zoöl.) See Sulphur- bottom. — Vegetable sulphur
(Bot.), lycopodium powder. See under Lycopodium.
Sulphurate
(Sul"phu*rate) a. [L. sulphuratus, sulfuratus.] Sulphureous. [Poetic & R.] Dr. H. More.
Sulphurate
(Sul"phu*rate) v. t. [imp. & p. p. Sulphurated ; p. pr. & vb. n. Sulphurating.] (Chem.)
To sulphurize. [Archaic]
Sulphuration
(Sul`phu*ra"tion) n. [Cf. F. sulfuration, L. sulphuratio, sulfuratio, a vein of sulphur.] The
act or process of combining or impregnating with sulphur or its compounds; also, the state of being so
combined or impregnated.
Sulphurator
(Sul"phu*ra`tor) n. An apparatus for impregnating with, or exposing to the action of, sulphur; especially,
an apparatus for fumigating or bleaching by means of the fumes of burning sulphur.
Sulphur-bottom
(Sul`phur-bot"tom) n. (Zoöl.) A very large whalebone whale of the genus Sibbaldius,
having a yellowish belly; especially, S. sulfureus of the North Pacific, and S. borealis of the North Atlantic; —
called also sulphur whale.
Sulphureity
(Sul`phu*re"i*ty) n. The quality or state of being sulphureous. [Obs.] B. Jonson.
Sulphureous
(Sul*phu"re*ous) a. [L. sulphureus, sulfureus.] Consisting of sulphur; having the qualities
of sulphur, or brimstone; impregnated with sulphur.
Her snakes united, sulphureous waters drink. Pope. — Sul*phu"re*ous*ly, adv. — Sul*phu"re*ous*ness, n.
Sulphuret
(Sul"phu*ret) n. (Chem.) A sulphide; as, a sulphuret of potassium. [Obsoles.]
Sulphureted
(Sul"phu*ret`ed), a. (Chem.) Combined or impregnated with sulphur; sulphurized. [Written
also sulphuretted.]
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