from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. hydrogen, especially when formerly considered as a metal
from the GNU version of the Collaborative International Dictionary of English
- n. Hydrogen; -- called also in view of its supposed metallic nature.
from The Century Dictionary and Cyclopedia
- n. Hydrogen regarded as a metal; solidified hydrogen.
- n. Hydrogen occluded by palladium. See occlusion.
Sorry, no etymologies found.