methyl green 名詞
 甲基綠


 Meth·yl n.  Chem. A univalent hydrocarbon radical, CH3-, not existing alone but regarded as an essential residue of methane, and appearing as a component part of many derivatives; as, methyl alcohol, methyl ether, methyl amine, etc. [Formerly written also methule, methyle, etc.]
 Methyl alcohol Chem., a light, volatile, inflammable liquid, CH3.OH, obtained by the distillation of wood, and hence called wood alcohol or wood spirit; tecnically referred to as methanol; -- called also methol, carbinol, etc.
 Methyl amine Chem., a colorless, inflammable, alkaline gas, CH3.NH2, having an ammoniacal, fishy odor.  It is produced artificially, and also occurs naturally in herring brine and other fishy products.  It is regarded as ammonia in which a third of its hydrogen is replaced by methyl, and is a type of the class of substituted ammonias.
 Methyl ether Chem., a light, volatile ether CH3.O.CH3, obtained by the etherification of methyl alcohol; -- called also methyl oxide or dimethyl ether.
 Methyl green. Chem. See under Green, n.
 Methyl orange. Chem. See Helianthin.
 Methyl violet Chem., an artificial dye, consisting of certain methyl halogen derivatives of rosaniline.

 ◄ ►


 Green n.
 1. The color of growing plants; the color of the solar spectrum intermediate between the yellow and the blue.
 2. A grassy plain or plat; a piece of ground covered with verdant herbage; as, the village green.
    O'er the smooth enameled green.   --Milton.
 3. Fresh leaves or branches of trees or other plants; wreaths; -- usually in the plural.
 In that soft season when descending showers
 Call forth the greens, and wake the rising flowers.   --Pope.
 4. pl. Leaves and stems of young plants, as spinach, beets, etc., which in their green state are boiled for food.
 5. Any substance or pigment of a green color.
 Alkali green Chem., an alkali salt of a sulphonic acid derivative of a complex aniline dye, resembling emerald green; -- called also Helvetia green.
 Berlin green. Chem. See under Berlin.
 Brilliant green Chem., a complex aniline dye, resembling emerald green in composition.
 Brunswick green, an oxychloride of copper.
 Chrome green. See under Chrome.
 Emerald green. Chem. (a) A complex basic derivative of aniline produced as a metallic, green crystalline substance, and used for dyeing silk, wool, and mordanted vegetable fiber a brilliant green; -- called also aldehyde green, acid green, malachite green, Victoria green, solid green, etc. It is usually found as a double chloride, with zinc chloride, or as an oxalate. (b) See Paris green (below).
 Gaignet's green Chem. a green pigment employed by the French artist, Adrian Gusgnet, and consisting essentially of a basic hydrate of chromium.
 Methyl green Chem., an artificial rosaniline dyestuff, obtained as a green substance having a brilliant yellow luster; -- called also light-green.
 Mineral green. See under Mineral.
 Mountain green. See Green earth, under Green, a.
 Paris green Chem., a poisonous green powder, consisting of a mixture of several double salts of the acetate and arsenite of copper. It has found very extensive use as a pigment for wall paper, artificial flowers, etc., but particularly as an exterminator of insects, as the potato bug; -- called also Schweinfurth green, imperial green, Vienna green, emerald qreen, and mitis green.
 Scheele's green Chem., a green pigment, consisting essentially of a hydrous arsenite of copper; -- called also Swedish green. It may enter into various pigments called parrot green, pickel green, Brunswick green, nereid green, or emerald green.