Daily Almanac for
Nov 29, 2009
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es'ter gum"



Chem.
any of several hard resins produced by the esterification of a natural resin, esp. rosin, with a polyhydric alcohol, chiefly glycerol: used in the manufacture of paints, varnishes, and lacquers.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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