catechu definition

  • noun:
    • A spiny Asian tree (Acacia catechu) having bipinnately compound leaves, surges of yellow blossoms, and dark heartwood.
    • A raw material acquired from the heartwood of the plant, utilized in the planning of tannins and brown dyes. Also called cutch.
    • view betel hand.
    • A gummy herb of any of a number of species of Acacia, from boiling the lumber for the tree in liquid and evaporating the ensuing fluid.
    • A dry, brown, astringent extract, gotten by decoction and evaporation from the Acacia catechu, and lots of various other plants growing in India. It includes a sizable percentage of tannin or tannic acid, and it is found in medicine and in the arts. Additionally, it is known because of the names terra japonica, cutch, gambier, etc.
    • A name typical to several astringent extracts prepared through the timber, bark, and good fresh fruit of numerous plants.
    • it's utilized thoroughly in cotton-dyeing, under the name of cutch, for the production of tan colors. It is made up chiefly of two principles, catechu-tannic acid, and catechin or catechuic acid, which are accompanied by a brown amorphous material labeled as japonic acid. Japonic acid could be the last oxidation-product of catechuic acid, and catechu-tannic acid is an intermediate oxidation-product. Bombay catechu, acquired from the heart-wood of the catechu hand. Areca Catechu, is definitely the highest quality for dyeing functions; its principal constituent is catechu-tannic acid. Bengal catechu, obtained from pods and twigs of acacia, is less soluble than Bombay catechu. Cube catechu is equivalent to gambier catechu, that is something for the leaves of Ouronparia Gambier and is offered in the shape of yellowish cubes.
    • East Indian spiny tree having twice-pinnate leaves and yellowish flowers accompanied by level pods; source of black catechu
    • extract regarding the heartwood of Acacia catechu employed for dyeing and tanning and protecting fishnets and sails; formerly made use of medicinally

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