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An alkaloid extracted from the bark of several species of cinchona (esp. Cinchona Calisaya) as a bitter white crystalline substance, C20H24N2O2. Hence, by extension (Med.), any of the salts of this alkaloid, as the acetate, chloride, sulphate, etc., employed as a febrifuge or antiperiodic. Called also quinia, quinina,…

A iodide of quinine obtained as a brown substance,. It is the base of herapathite. See Herapathite.

. It is a tonic, antiperiodic, and febrifuge, and is used in medicine as a substitute for quinine. [Written also bibirine.]

One of the quinine group of alkaloids, found especially in red cinchona bark. It is a white crystalline substance, C19H22N2O, with a bitter taste and qualities similar to, but weaker than, quinine; -- sometimes called also cinchonidia.

One of the quinine group of alkaloids isomeric with and resembling cinchonidine; -- called also cinchonia.

A condition produced by the excessive or long-continued use of quinine, and marked by deafness, roaring in the ears, vertigo, etc.

To produce cinchonism in; to poison with quinine or with cinchona.

so, any substance so extracted, and characteristic of that from which it is obtained; as, quinine is the most important extract of Peruvian bark.

The sulphate of iodoquinine, a substance crystallizing in thin plates remarkable for their effects in polarizing light.

nic, and is a remedy for malarial diseases. This property is due to several alkaloids, as quinine, cinchonine, etc., and their compounds; -- called also Jesuit's bark, and cinchona. See Cinchona.

d by the decomposition of phlorizin, and formerly used to some extent as a substitute for quinine.

To direct, as a remedy to be used by a patient; as, the doctor prescribed quinine.

Quinine.

Pertaining to, derived from, or connected with, quinine and related compounds; specifically, designating a nonnitrogenous acid obtained from cinchona bark, coffee, beans, etc., as a white crystalline substance. [Written also chinic, kinic.]

An uncrystallizable alkaloid obtained by the action of heat from quinine, with which it is isomeric.

An alkaloid isomeric with, and resembling, quinine, found in certain species of cinchona, from which it is extracted as a bitter white crystalline substance; conchinine. It is used somewhat as a febrifuge. [Written also chinidine.]

nating, a nitrogenous acid obtained as a yellow crystalline substance by the oxidation of quinine.

A hypothetical radical of quinine and related alkaloids.

ur thousand species. Among them are the coffee tree, the trees yielding peruvian bark and quinine, the madder, the quaker ladies, and the trees bearing the edible fruits called genipap and Sierre Leone peach, besides many plants noted for the beauty or the fragrance of their blossoms.

; preventing or curing disease by a peculiar adaption, and not on general principles; as, quinine is a specific medicine in cases of malaria. In fact, all medicines will be found specific in the perfection of the science. Coleridge. Specific character (Nat. Hist.), a characteristic or characteristics distinguishing one…