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Gum arabic   /gəm ˈærəbɪk/   Listen
noun
Gum  n.  
1.
A vegetable secretion of many trees or plants that hardens when it exudes, but is soluble in water; as, gum arabic; gum tragacanth; the gum of the cherry tree. Also, with less propriety, exudations that are not soluble in water; as, gum copal and gum sandarac, which are really resins.
2.
(Bot.) See Gum tree, below.
3.
A hive made of a section of a hollow gum tree; hence, any roughly made hive; also, a vessel or bin made of a hollow log. (Southern U. S.)
4.
A rubber overshoe. (Local, U. S.)
Black gum, Blue gum, British gum, etc. See under Black, Blue, etc.
Gum Acaroidea, the resinous gum of the Australian grass tree (Xanlhorrhoea).
Gum animal (Zool.), the galago of West Africa; so called because it feeds on gums. See Galago.
Gum animi or animé. See Anime.
Gum arabic, a gum yielded mostly by several species of Acacia (chiefly A. vera and A. Arabica) growing in Africa and Southern Asia; called also gum acacia. East Indian gum arabic comes from a tree of the Orange family which bears the elephant apple.
Gum butea, a gum yielded by the Indian plants Butea frondosa and B. superba, and used locally in tanning and in precipitating indigo.
Gum cistus, a plant of the genus Cistus (Cistus ladaniferus), a species of rock rose.
Gum dragon. See Tragacanth.
Gum elastic, Elastic gum. See Caoutchouc.
Gum elemi. See Elemi.
Gum juniper. See Sandarac.
Gum kino. See under Kino.
Gum lac. See Lac.
Gum Ladanum, a fragrant gum yielded by several Oriental species of Cistus or rock rose.
Gum passages, sap receptacles extending through the parenchyma of certain plants (Amygdalaceae, Cactaceae, etc.), and affording passage for gum.
Gum pot, a varnish maker's utensil for melting gum and mixing other ingredients.
Gum resin, the milky juice of a plant solidified by exposure to air; one of certain inspissated saps, mixtures of, or having properties of, gum and resin; a resin containing more or less mucilaginous and gummy matter.
Gum sandarac. See Sandarac.
Gum Senegal, a gum similar to gum arabic, yielded by trees (Acacia Verek and A. Adansoniä) growing in the Senegal country, West Africa.
Gum tragacanth. See Tragacanth.
Gum water, a solution of gum, esp. of gum arabic, in water.
Gum wood, the wood of any gum tree, esp. the wood of the Eucalyptus piperita, of New South Wales.


adjective
Arabic  adj.  Of or pertaining to Arabia or the Arabians.
Arabic numerals or Arabic figures, the nine digits, 1, 2, 3, etc., and the cipher 0.
Gum arabic. See under Gum.





Collaborative International Dictionary of English 0.48


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"Gum arabic" Quotes from Famous Books



... in this respect excels that of any other country. The workmen first saturate the surface with olive oil, and then apply a solution of gum arabic dissolved in boiling alcohol. This mode of varnishing is equally brilliant, if not superior, to that employed by the French ...
— Enquire Within Upon Everything - The Great Victorian Domestic Standby • Anonymous
... (sulphuric, hydrochloric, acetic) it is transformed into dextrose, or ordinary glucose, C{6}H{12}O{6}. It does not ferment in contact with yeast, and does not reduce Fehling's solution. If heated with strong nitric acid it gives oxalic, and not mucic acid. Dextrine much resembles gum arabic, for which it is generally substituted. It is employed for sizing paper, for stiffening cotton goods, and for thickening colours in calico printing, also in the making of lozenges, adhesive stamps ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 - "Destructors" to "Diameter" • Various
... cotton, groundnuts (peanuts), sorghum, millet, wheat, gum arabic, sugarcane, cassara, mangos, papaya, bananas, sweet potatoes, sesame; ...
— The 2001 CIA World Factbook • United States. Central Intelligence Agency.
... but after many unsuccessful trials, I was led to abandon this practice and to resort to other means. Of all the remedies employed to attain this effect, calcined magnesia mixed in a thick solution of gum arabic seemed to me to answer best; for whilst it succeeded, in many cases, in arresting the vomiting, it tended to keep the bowels open. Together with this, revulsive remedies were applied to the skin, and sometimes succeeded very well,—a sufficient proof, I think, that this haemorrhage is the ...
— North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 • Various
... the episode lay on the short, uncomfortable sofa, with the table-cover for a blanket. In answer to Schilsky, he said faintly, without opening his eyes: "Nothing would. You are an ox. When I wake this morning, with a mouth like gum arabic, he sits there as if he had not stirred all night. Then to bed, and snores till midday, through all the ...
— Maurice Guest • Henry Handel Richardson
... in How Jose formed his Cocoa Estate we read: "A cocoa dealer of our day to give a uniform colour to the miscellaneous brands he has purchased from Pedro, Dick, or Sammy will wash the beans in a heap, with a mixture of starch, sour oranges, gum arabic and red ochre. This mixture is always boiled. I can recommend the 'Chinos' in this dodge, who are all adepts in all sorts of 'adulteration' schemes. They even add some grease to this mixture so as to give the beans that brilliant gloss which you see sometimes." In Trinidad ...
— Cocoa and Chocolate - Their History from Plantation to Consumer • Arthur W. Knapp
... illustrates the wonderful improvement that may be brought about by cutting and polishing better than diamond. In the rough the diamond is less attractive in appearance than rock crystal. G. F. Herbert-Smith likens its appearance to that of soda crystals. Another author likens it to gum arabic. The surface of the rough diamond is usually ridged by the overlapping of minute layers or strata of the material so that one cannot look into the clear interior any more than one can look into a bank, through the prism-glass windows that are so much used to diffuse the light that enters by means ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade
... nourishing fluid of the plant seems to be exsuded by a retrograde motion of the cutaneous lymphatics, as in the sweating sickness of the last century. The latter is a phagedenic ulcer of the bark, very destructive to young apple- trees, and which in cherry-trees is attended with a deposition of gum arabic, which often terminates in ...
— The Botanic Garden - A Poem in Two Parts. Part 1: The Economy of Vegetation • Erasmus Darwin


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