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tragacanth n. 一種樹液,制藥,染色用 一種樹液,制藥,染色用 tragacanth n 1: a gum used in pharmacy, adhesives, and textile printing Tragacanth \Trag"a*canth\, n. [L. tragacanthum tragacanth,
tragacantha the plant producing tragacanth, Gr. ? ? a he-goat ? a thorn: cf. F. tragacanthe.] A kind of gum procured from a spiny leguminous shrub ({Astragalus gummifer}) of Western Asia, and other species of Astragalus. It comes in hard whitish or yellowish flakes or filaments, and is nearly insoluble in water, but slowly swells into a mucilaginous mass, which is used as a substitute for gum arabic in medicine and the arts. Called also {gum tragacanth}. [1913 Webster] Dracanth \Dra"canth\, n. A kind of gum; -- called also {gum tragacanth}, or {tragacanth}. See {Tragacanth}. [1913 Webster]
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