Acacia (a-ka's he-ah). 1

A genus of the Leguminosae, sub-order Mimoseae. 2. Gum arabic. In the U. S. Ph. a dry gummy exudate from A. Senegal and other species. It is used in making mucilage and as a vehicle in pharmacy. A. Catechu. See catechu. A. Senegal. Several species have been confounded under this name. One of them furnishes gum Senegal, official Br. Ph., 1900. A. steno carp a. A species found in Upper Egypt and adjacent countries, furnishing Suakin gum arabic. A. vera, A. veravel. Syn.: Mimosa nilotica. A moderate-sized tree, indigenous to Egypt, but growing also in Nubia, Senegal, and probably other parts of Africa, also found in India. This and A. verek are the most important sources of gum. arabic. A. verek. A species growing in eastern Africa, but chiefly in western Africa, north of the Senegal River, acaciae gummi. Gum arabic. [Br. Ph.] mucilago acaciae. A mucilage containing 34 per cent. [U. S. Ph.] or 40 per cent. [Br. Ph.] of acacia in water, syrup us acaciae. A syrup of a. containing 25 parts of mucilage of a. and 75 parts of syrup. [U. S. Ph.] [Gr., akakia, an Egyptian tree; from ake, a spine.]