hydrogen
Pronunciation: /ˈhaɪdɹəd͡ʒ(ə)n/
The English word “hydrogen” has 5 meanings listed here.
noun
- The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
- An atom of this element.
- Molecular hydrogen (sense 1; symbol H₂), a colourless, odourless and flammable gas at room temperature.
- A molecule of this molecular species.
- Synonym of protium (“the lightest and most common isotope of hydrogen (sense 1; symbol H, ¹H, or 11H), as contrasted with deuterium and tritium”).
Etymology
Borrowed from French hydrogène (“hydrogen”), coined by the French chemists Louis-Bernard Guyton de Morveau (1737–1816) and Antoine Lavoisier (1743–1794) from hydro- (prefix meaning ‘water’) + -gène (suffix denoting a producer of something), from the fact that water is produced as a compound when hydrogen is oxidized. * The prefix hydro- is borrowed from Ancient Greek ῠ̔δρο- (hŭdro-), from ῡ̆̔́δωρ…
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.