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A concrete juice produced by various trees found in the Malayan archipelago, especially by the Isonandra, or Dichopsis, Gutta. It becomes soft, and unpressible at the tamperature of boiling water, and, on cooling, retains its new shape. It dissolves in oils and ethers, but not in water. In many of its properties it res…

gra and species of Sapota and Mimusops. Most of them yield a substance closely resembling gutta-percha.

or sapodilla (Sapota zapotilla). It is more plastic than caoutchouc and more elastic than gutta-percha, as an adulterant of which it is used in England. It is used largely in the United States in making chewing gum.

A hydrocarbon extracted from gutta-percha, as a yellow, resinous substance; -- called also fluanil.

oyed in etching glass, and is preserved only in vessels of platinum, lead, caoutchouc, or gutta-percha.

A genus of sapotaceous trees of India. Isonandra Gutta is the principal source of gutta-percha.

A substance resembling gutta-percha, and used to adulterate it, obtained from the East Indian tree Isonandra acuminata.

l) trees and shrubs, including the star apple, the Lucuma, or natural marmalade tree, the gutta-percha tree (Isonandra), and the India mahwa, as well as the sapodilla, or sapota, after which the order is named.

The act or process of imparting to caoutchouc, gutta-percha, or the like, greater elasticity, durability, or hardness by heating with sulphur under pressure.