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单词 tragacanth
释义

tragacanth


trag·a·canth

T0307000 (trăg′ə-kănth′, trăj′-) n. 1. Any of several spiny Asian shrubs of the genus Astragalus of the pea family, especially A. gummifer, of the Middle East, yielding a gum used in pharmaceuticals, adhesives, and textile printing, and as an emulsifier and thickener in foods. 2. The gum of any of these plants.
[Latin tragacantha, from Greek tragakantha : tragos, goat (probably from the resemblance of the drops of hardened gum to tiny goat horns in shape, color, and texture when they are collected off the plant); see tragic + akantha, thorn, spine.]

tragacanth

(ˈtræɡəˌkænθ) n1. (Plants) any of various spiny leguminous plants of the genus Astragalus, esp A. gummifer, of Asia, having clusters of white, yellow, or purple flowers, and yielding a substance that is made into a gum2. (Plants) the gum obtained from any of these plants, used in the manufacture of pills and lozenges, etc[C16: from French tragacante, from Latin tragacantha goat's thorn, from Greek tragakantha, from tragos goat + akantha thorn]

trag•a•canth

(ˈtræg əˌkænθ, ˈtrædʒ-)

n. a gum of various Asian shrubs belonging to the genus Astragalus, of the legume family, used as a filler, as in pills, and to stiffen calico. [1565–75; < Latin tragacantha goat's thorn < Greek tragákantha=trág(os) goat + ákantha thorn]
Thesaurus
Noun1.tragacanth - a gum used in pharmacy, adhesives, and textile printingtragacanth - a gum used in pharmacy, adhesives, and textile printinggum - any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying

tragacanth


tragacanth

(trăg`əkănth) or

gum tragacanth,

gummy exudation from the leguminous shrub Astragalus gummifer and related pulsepulse,
in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family. Numbering about 650 genera and 17,000 species, the family is third largest, after the asters and the orchids.
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 family plants of SE Europe and W Asia. It is obtained through incisions in the stem of the plant. The gum is produced chiefly in Iran. Tragacanth is almost insoluble in water but swells in it to form a stiff gel. It is used as an emulsifying agent, as a component of pills, hand lotions, and medicinal lubricating jellies, as a demulcent, and as a sizing material. A gum (sometimes called Indian tragacanth) from a plant of the sterculiasterculia
, common name for some members of the Sterculiaceae, a family of herbs, shrubs, and trees of tropical and subtropical regions. The most important members of the family are the cacao, source of cocoa and chocolate, and the cola, the caffeine-rich seeds of which are used
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 family is sold as a cheaper substitute. See gumgum,
term commonly applied to any of a wide variety of colloidal substances somewhat similar in appearance and general characteristics, exuded by or extracted from plants.
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.

tragacanth

[′traj·ə‚kanth] (materials) The gummy exudate produced by certain Asiatic species of Astragalus ; consists of a soluble portion containing uronic acid and arabinose, and an insoluble portion that absorbs water and swells to make a stiff opalescent mucilage.

tragacanth


tragacanth

 [trag´ah-kanth] the dried gummy exudation from Astragalus gummifer or other species of Astragalus; used as a suspending agent for drugs.

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]

tragacanth


Related to tragacanth: agar, guar gum
  • noun

Words related to tragacanth

noun a gum used in pharmacy, adhesives, and textile printing

Related Words

  • gum
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