DICT.TW Dictionary Taiwan
Liv·er, n. Anat. A very large glandular and vascular organ in the visceral cavity of all vertebrates.
Note: ☞ Most of the venous blood from the alimentary canal passes through it on its way back to the heart; and it secretes the bile, produces glycogen, and in other ways changes the blood which passes through it. In man it is situated immediately beneath the diaphragm and mainly on the right side. See Bile, Digestive, and Glycogen. The liver of invertebrate animals is usually made up of cæcal tubes, and differs materially, in form and function, from that of vertebrates.
Floating liver. See Wandering liver, under Wandering.
Liver of antimony, Liver of sulphur. Old Chem. See Hepar.
Liver brown, Liver color, the color of liver, a dark, reddish brown.
Liver shark Zool., a very large shark (Cetorhinus maximus), inhabiting the northern coasts both of Europe and North America. It sometimes becomes forty feet in length, being one of the largest sharks known; but it has small simple teeth, and is not dangerous. It is captured for the sake of its liver, which often yields several barrels of oil. It has gill rakers, resembling whalebone, by means of which it separates small animals from the sea water. Called also basking shark, bone shark, hoemother, homer, and sailfish; it is sometimes referred to as whale shark, but that name is more commonly used for the Rhincodon typus, which grows even larger.
Liver spots, yellowish brown patches on the skin, or spots of chloasma.
Sul·phur n.
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.
Note: ☞ 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.
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.
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
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.
◄ ►