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The inspissated juice of several species of acacia; Ð called also gum acacia, and gum arabic.

When one of its branches is broken, or its bark incised, a milky juice exudes, which becomes inspissated when in contact with the atmosphere.

Sap′-bee′tle a beetle which feeds on sap; Sap′-col′our, a vegetable juice inspissated by slow evaporation, for the use of painters.—adj.

This inspissated substance is of a dark brown, rather resembling gum than resin, and readily soluble in water.

It is supposed by many to be the inspissated secretion of the sebaceous follicles, and receives its name from its adhesiveness and colour.