thallious, a. Chem.
(ˈθælɪəs)
[f. thalli-um + -ous.]
Abounding in thallium; spec. containing thallium in greater proportion, relatively to oxygen, than thallic compounds. thallious oxide = Thallium monoxide, Tl2O.
| 1868 Watts Dict. Chem. V. 749 Thallic salts are easily distinguished from thallious salts by their behaviour with alkalis. 1868 [see thallic]. 1873 ― Fownes' Chem. (ed. 11) 412 Thallious Iodide, Tl I, is formed by direct combination of its elements, or by double decomposition. |