hydriodic, a. Chem.
(haɪdraɪˈɒdɪk)
[f. hydrogen) + iodine) + -ic. Cf. F. hydriodique.]
Containing hydrogen and iodine in chemical combination. hydriodic acid, the simple combination of hydrogen and iodine, also called hydrogen iodide (HI), a colourless very soluble gas, of strongly acid properties and suffocating odour.
| 1819 J. G. Children Chem. Anal. 110 Hydriodic acid is formed of one volume of the vapour of iodine and one volume of hydrogen. 1849 D. Campbell Inorg. Chem. 91 Hydriodic acid gas very much resembles hydrochloric acid gas. 1859 Fownes' Chem. 372 Iodide of ethyl; hydriodic ether. 1869 Roscoe Elem. Chem. 299 Olefiant gas..combines with hydriodic acid to form ethyl iodide. |
So hydriodide (haɪˈdraɪəʊdaɪd), a compound formed by the combination of hydriodic acid with an organic radical (or, formerly, with an element).
| 1823 Faraday Exp. Res. xvii. 81 Hydriodide of carbon. |