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definition of the word hydrogen

by the Wiktionnary

Chemical element
H
Next: helium (He)

From French hydrogène, coined by Louis-Bernard Guyton de Morveau, from Ancient Greek ὕδωρ (hudōr), water) + γεννάω (gennaō), I bring forth).

Singular
hydrogen

Plural
hydrogens

hydrogen (plural hydrogens)

Wikipedia has an article on:
Hydrogen

Wikipedia

  1. The lightest chemical element (symbol H) with an atomic number of 1 and atomic weight of 1.00794.
  2. Molecular hydrogen (H2), a colourless, odourless and flammable gas at room temperature.
  3. An atom of the element.
  4. A sample of the element.


Definition from Wiktionary
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