Cinchona definition

Any of several trees and shrubs of the genus Cinchona, native chiefly to the Andes and cultivated for bark that yields the medicinal alkaloids quinine and quinidine, which are used to treat malaria.

The dried bark of any of these plants.

Any of a genus (Cinchona) of tropical South American trees of the madder family, from the bark of which quinine and related medicinal alkaloids are obtained: the trees are widely cultivated in Asia and the East Indies.

The bitter bark of these trees.

Any of various evergreen trees and shrubs of the genus Cinchona, native chiefly to the Andes, some species of which are cultivated for their bark, which contains quinine and other alkaloids used chiefly to treat malaria.

The dried bark of any of these plants.