[Native name in Guarani.] In taigu wood, also called lapacho wood: see quots. Hence Taigaic a. Chem. in taiguic acid, an acid obtained from this wood.
1868. Watts, Dict. Chem., V. 655. Taigu wood, a wood from Paraguay, resembling guaiacum-wood in appearance and specific gravity. Ibid., Taiguic acid … occurs in the cold alcoholic extract of taigu wood.
1892. Morley & Muir, Watts’ Dict. Chem., III. 119. Lapachic acid, C15H14O3; Oxy-amenyl-naphtho-quinone; Taiguic acid … a yellow colouring matter present in the ‘lapacho’ wood of a genus of the Biguoniaceæ.
