from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to hydriodic acid or its derivatives
from the GNU version of the Collaborative International Dictionary of English
- adj. Pertaining to, or derived from, hydrogen and iodine; -- said of an acid (HI) produced by the combination of these elements.
from The Century Dictionary and Cyclopedia
- Produced by the combination of hydrogen and iodine.
Ultimately from hydrogen + iodine (Wiktionary)