- a water-soluble, gummy exudate obtained from the acacia tree, especially Acacia senegal, used as an emulsifier, an adhesive, in inks, and in pharmaceuticals.
Origin of gum arabic
Middle English word dating back to 1350–1400
Also called acacia, gum acacia.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for gum arabic
Why didn't we try the Professor's gum-arabic, and save collodion!
The solution of gum-arabic is made by simply adding water to it.How to Stuff Birds and Animals
Aaron A. Warford
One might also try a glaze made with hide glue or gum-arabic.Book Repair and Restoration
The gum-arabic will prevent the chalk from cracking and falling off.Wanderings in South America
They are white, odourless substances, and are good substitutes for gum-arabic.The New Gresham Encyclopedia
- a gum exuded by certain acacia trees, esp Acacia senegal: used in the manufacture of ink, food thickeners, pills, emulsifiers, etcAlso called: acacia, gum acacia
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
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.