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‖n. [ NL., fr. Gr. &unr_; indistinct, uncertain. ] (Paleon.) A genus of trilobites found in the Lower Silurian formation. See Illust. in Append. [ 1913 Webster ]

n. 1. 1 the type genus of the Ascaphidae; in some classifications included in the family Leiopelmatidae.
Syn. -- genus Ascaphus. [ WordNet 1.5 ]

n. [ Pref. bi- + sulphuret. ] (Chem.) See Bisulphide. [ 1913 Webster ]

prop. n. A genus of Indian antelopes; the nilgais.
Syn. -- genus Boselaphus. [ WordNet 1.5 ]

n. a genus of plants having only one species, an erect Asiatic herb with large flowers.
Syn. -- genus Callistephus. [ WordNet 1.5 ]

n. a genus comprising the gillemots.
Syn. -- genus Cepphus. [ WordNet 1.5 ]

v. t. [ imp. & p. p. Desulphurated; p. pr. & vb. n. Desulphurating. ] To deprive of sulphur. [ 1913 Webster ]

n. [ Cf. F. désulfuration. ] The act or process of depriving of sulphur. [ 1913 Webster ]

v. t. To desulphurate; to deprive of sulphur. -- De*sul`phur*i*za"tion n. [1913 Webster]

n. [ Pref. deuto- + sulphuret. ] (Chem.) A disulphide. [ Obs. ] [ 1913 Webster ]

n. [ Pref. di- + sulphuret. ] (Chem.) See Disulphide. [ 1913 Webster ]

a. [ Pref. di- + sulphuric. ] (Chem.) Applied to an acid having in each molecule two atoms of sulphur in the higher state of oxidation. [ 1913 Webster ]

Disulphuric acid, 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. [ 1913 Webster ]

n. (Zoöl.) A species of deer (Elaphurus Davidianus) found in china. It is about four feet high at the shoulder and has peculiar antlers. [ 1913 Webster ]

pos>a. (Chem.) Pertaining to, or containing, ethyl and sulphuric acid. [ 1913 Webster ]

Ethylsulphuric acid (Chem.), an acid sulphate of ethyl, H.C2H5.SO4, produced as a thick liquid by the action of sulphiric acid on alcohol. It appears to be the active catalytic agent in the process of etherification. [ 1913 Webster ]

n. [ Gr. e'yfyh`s well grown, graceful; e'y^ well + fyh` growth, fr. fy`ein to grow. This affected style of conversation and writing, fashionable for some time in the court of Elizabeth, had its origin from the fame of Lyly's books, “Euphues, or the Anatomy of Wit, ” and “Euphues and his England.” ] (Rhet.) An affectation of excessive elegance and refinement of language; high-flown diction. [ 1913 Webster ]

n. One who affects excessive refinement and elegance of language; -- applied esp. to a class of writers, in the age of Elizabeth, whose productions are marked by affected conceits and high-flown diction. [ 1913 Webster ]

a. Belonging to the euphuists, or euphuism; affectedly refined. [ 1913 Webster ]

v. t. To affect excessive refinement in language; to be overnice in expression. [ 1913 Webster ]

n. (Chem.) A hydrosulphide. [ Archaic ] [ 1913 Webster ]

a. (Chem.) Combined with hydrogen sulphide. [ 1913 Webster ]

a. [ Hydro-, 2 + sulphuric. ] (Chem.) Pertaining to, or derived from, hydrogen and sulphur; as, hydrosulphuric acid, a designation applied to the solution of hydrogen sulphide in water. [ 1913 Webster ]

a. (Chem.) Pertaining to, or designating, an acid obtained by the reduction of sulphurous acid. See Hyposulphurous acid, under Hyposulphurous. [ 1913 Webster ]

a. [ Pref. hypo- + sulphuric. ] (Chem.) Pertaining to, or containing, sulphur in a lower state of oxidation than in the sulphuric compounds; as, hyposulphuric acid. [ 1913 Webster ]

Hyposulphuric acid, an acid, H2S2O6, obtained by the action of manganese dioxide on sulphur dioxide, and known only in a watery solution and in its salts; -- called also dithionic acid. See Dithionic. [ 1913 Webster ]

a. [ Pref. hypo- + sulphurous. ] (Chem.) Pertaining to, or containing, sulphur, all, or a part, in a low state of oxidation. [ 1913 Webster ]

Hyposulphurous acid. (a) Thiosulphuric acid. [ Obs. ] (b) An acid, H2SO2, obtained by the reduction of sulphurous acid. It is not obtained in the free state, but in an orange-yellow water solution, which is a strong reducing and bleaching agent. Called also hydrosulphurous acid. [ 1913 Webster ]

n. [ Mono- + sulphuret. ] (Chem.) See Monosulphide. [ 1913 Webster ]

n. (Chem.) An oxysulphide. [ Obsolescent ] [ 1913 Webster ]

n. (Chem.) A persulphide. [ Obs. ] [ 1913 Webster ]

n. Any of various chiefly deciduous ornamental shrubs of the genus Philadelphus having white sweet-scented flowers, single or in clusters; it is widely grown in temperate regions. [ WordNet 1.5 ]

n. (Chem.) A phosphide. [ Obsoles. ] [ 1913 Webster ]

a. (Chem.) Impregnated, or combined, with phosphorus. [ Obsoles. ] [ Written also phosphuretted. ] [ 1913 Webster ]

Phosphureted hydrogen. (Chem.) See Phosphine. [ 1913 Webster ]

n. (Chem.) A polysulphide. [ Obsoles. ] [ 1913 Webster ]

n. [ Proto- + sulphuret. ] (Chem.) A protosulphide. [ Obs. ] [ 1913 Webster ]

a. [ Pyro- + -sulphuric. ] (Chem.) Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration. [ 1913 Webster ]

‖n. [ NL. So called because it was reputed to be a remedy for scrofula. ] (Bot.) A genus of coarse herbs having small flowers in panicled cymes; figwort. [ 1913 Webster ]

a. (Bot.) Of or pertaining to a very large natural order of gamopetalous plants (Scrophulariaceae, or Scrophularineae), usually having irregular didynamous flowers and a two-celled pod. The order includes the mullein, foxglove, snapdragon, figwort, painted cup, yellow rattle, and some exotic trees, as the Paulownia. [ 1913 Webster ]

n.; pl. Scyphi [ L., a cup, Gr. sky`fos. ] 1. (Antiq.) A kind of large drinking cup, -- used by Greeks and Romans, esp. by poor folk. [ 1913 Webster ]

2. (Bot.) (a) The cup of a narcissus, or a similar appendage to the corolla in other flowers. (b) A cup-shaped stem or podetium in lichens. Also called scypha. See Illust. of Cladonia pyxidata, under Lichen. [ 1913 Webster ]

n. [ L. siphunculus, sipunculus, dim. of sipho. See Siphon. ] (Zool.) The tube which runs through the partitions of chambered cephalopod shells. [ 1913 Webster ]

a. (Zool.) Having a siphuncle; siphunculated. [ 1913 Webster ]

a. (Zool.) Of or pertaining to the siphuncle. [ 1913 Webster ]

a. (Zool.) Having a siphuncle. Huxley. [ 1913 Webster ]

n. [ L. Sisyphus, Sisyphus, fr. Gr. &unr_;&unr_;&unr_;&unr_;. ] (Class. Myth.) A king of Corinth, son of Aeolus, famed for his cunning. He was killed by Theseus, and in the lower world was condemned by Pluto to roll to the top of a hill a huge stone, which constantly rolled back again, making his task incessant. [ 1913 Webster ]

‖n. [ NL. ] (Med.) See Red-gum, 1. [ 1913 Webster ]

n. [ L., better sulfur: cf. F. soufre. ] 1. (Chem.) A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out. Symbol S. Atomic weight 32. The specific gravity of ordinary octohedral sulphur is 2.05; of prismatic sulphur, 1.96. [ 1913 Webster ]

☞ It is purified by distillation, and is obtained as a lemon-yellow powder (by sublimation), called flour, or flowers, of sulphur, or in cast sticks called roll sulphur, or brimstone. It burns with a blue flame and a peculiar suffocating odor. It is an ingredient of gunpowder, is used on friction matches, and in medicine (as a laxative and insecticide), but its chief use is in the manufacture of sulphuric acid. Sulphur can be obtained in two crystalline modifications, in orthorhombic 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. [ 1913 Webster ]

2. (Zool.) Any one of numerous species of yellow or orange butterflies of the subfamily Pierinae; as, the clouded sulphur (Eurymus philodice syn. Colias philodice), which is the common yellow butterfly of the Eastern United States. [ 1913 Webster ]

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. (Zool.) See Sulphur-bottom. --
Vegetable sulphur (Bot.), lycopodium powder. See under Lycopodium. [ 1913 Webster ]

a. [ L. sulphuratus, sulfuratus. ] Sulphureous. [ Poetic & R. ] Dr. H. More. [ 1913 Webster ]

v. t. [ imp. & p. p. Sulphurated p. pr. & vb. n. Sulphurating. ] (Chem.) To sulphurize. [ Archaic ] [ 1913 Webster ]

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. [ 1913 Webster ]

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. [ 1913 Webster ]

n. (Zool.) A very large whalebone whale of the genus Sibbaldius, having a yellowish belly; especially, Sibbaldius sulfureus of the North Pacific, and Sibbaldius borealis of the North Atlantic; -- called also sulphur whale. [ 1913 Webster ]