Guaiacum (gwi'ak-um). 1

A genus of resinous trees or shrubs. 2. Of the U. S. Ph., G. of ficin ale; also guaiac resin, g. blood test. See separate heading. guaiac i lignum. See guaiac wood, under Guaiac. G. of ficin ale. A tree growing in the West Indies and on the northern coast of South America. It is one of the sources of guaiac wood, and the chief, if not the sole, source of guaiac resin. G. sanctum. A species much resembling G. of ficin ale, found in southern Florida and the West Indies. It yields the excellent guaiac wood imported from the Bahamas, and also some of the official guaiac resin, mistura guaiac i.. A mixture containing guaiac resin suspended in cinnamon water [Br. Ph.].. tinctura guaiac i. Of the U. S. Ph., a solution of guaiac resin in alcohol, tinctura guaiac i ammon i at a. A preparation made by di olving 1 part [U. S. Ph.] (or 4 oz. [av.] [Br. Ph.]) of guaiac resin in sufficient aromatic spirit of ammonia to make 5 parts [U. S. Ph.] or 20 fl. oz. [Br. Ph.]; or by adding aqua ammoniae to an extemporaneously made tincture of guaiac resin. trochiscus guaiac i resinae. Lozenges made with 3 grains of g. resin [Br. Ph.].