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the dried gummy exudation from Astragalus gummifer or other species of Astragalus; used as a suspending agent for drugs.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
trag·a·canth, tragacantha (trag'ă-kanth, -kan'thă; -santh),
A gummy exudation from Astragalus species, including A. gummifer, shrubs of the eastern end of the Mediterranean; it occurs as bands or strings of a tough gummy substance, forming a jellylike mucilage with 50 parts of water; used as a demulcent and excipient in emulsions and suspensions.
[G. tragakantha, a gum-producing shrub, fr. tragos, goat, + akanthos, thorn]
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