combining form from TUNGSTEN, used in the names of compound acids (and their salts) containing the oxides of tungsten and another element, as tungstoboric and tungstosilicic acids, whose salts are tungstoborates and tungstosilicates.
1868. Watts, Dict. Chem., V. 915. Tungstosilicic acids. Ibid., 917. The tungstosilicates are obtained by saturating the acid with carbonates.
1883. Science, I. 489/2. Tungstoboric acid proves to be a convenient reagent for characterizing the alkaloids and peptones. Ibid. Cadmic tungstoborate.
