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gum arabic

American  

noun

  1. a water-soluble, gummy exudate obtained from the acacia tree, especially Acacia senegal, used as an emulsifier, an adhesive, in inks, and in pharmaceuticals.


gum arabic British  

noun

  1. Also called: acacia.   gum acacia.  a gum exuded by certain acacia trees, esp Acacia senegal: used in the manufacture of ink, food thickeners, pills, emulsifiers, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

gum arabic Scientific  
  1. A gum exuded by various African trees of the genus Acacia, especially A. senegal. Gum arabic is used in the preparation of pills and emulsions, in the manufacture of adhesives and candies, and as a thickener and stabilizer of colloids. Gum arabic consists mostly of a mixture of oligosaccharides and heavy glycoproteins.


Etymology

Origin of gum arabic

Middle English word dating back to 1350–1400