from The Century Dictionary.
- noun Hydrogen regarded as a metal; solidified hydrogen.
- noun Hydrogen occluded by palladium. See
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) Hydrogen; -- called also in view of its supposed metallic nature.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun obsolete, chemistry
hydrogen, especially when formerly considered as a metal
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