Chem. [f. Gr. θάλλ-ειν to bloom + -ENE.] (See quot. 1881.)
1872. H. Morton, in Chem. News, 6 Dec., 272/2. The above-described body, which I may as well call thallene hereafter.
1881. Watts, Dict. Chem., VIII. 1918. Thallene, a solid hydrocarbon, isomeric with anthracene, obtained from the last products which pass over in the distillation of American petroleum. It is distinguished by a splendid green fluorescence.
