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Convolvulin

02319 Con*vol"vu*lin (?), n. (Chem.) A glucoside occurring in jalap (the root of a convolvulaceous plant), and extracted as a colorless, tasteless, gummy mass of powerful purgative properties.

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Cordillera

02323 Cor*dil"ler*a (k?r-d?l"l?r-?; Sp. k?r`d?-ly?"r?), n. [Sp., fr. OSp. cordilla, cordiella, dim. of cuerda a rope, string. See Cord.] (Geol.) A mountain ridge or chain. note &hand; Cordillera is sometimes applied, in geology, to the system of mountain chains near the border of a continent; thus, the western cordillera of North America in the United States includes the Rocky Mountains, Sierra Nevada, Coast and Cascade ranges. /note