hydrogen
The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
Noun 3 meanings
The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
“Our professor then reminded us that a hydrogen ion is merely a proton, and thus we should think about acid-base theory as we consider this problem further.”
Molecular hydrogen (sense 1; symbol H₂), a colourless, odourless and flammable gas at room temperature.
“A large tank of hydrogen constituted most of the bulk of that rocket.”
Synonym of protium (“the lightest and most common isotope of hydrogen (sense 1; symbol H, ¹H, or 11H), as contrasted with deuterium and tritium”).
“Both hydrogen and deuterium are present in every glass of water that you drink, but the amount of deuterium is rather small.”
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.
Similar and opposite words
HYDROGEN at a glance
HYDROGEN has 8 letters and scores 16 points in Scrabble (H 4 + Y 4 + D 2 + R 1 + O 1 + G 2 + E 1 + N 1) and 16 in Words With Friends, before board bonuses. It ranks #7,234 by how often it appears in everyday English. It is valid in ENABLE, NWL2023, Collins/SOWPODS.
Rhymes with hydrogen
All rhymes- OXYGEN17
- NITROGEN9
- ESTROGEN9
- BERGEN9
- COLLAGEN11
- ANTIGEN8
- PATHOGEN14
- HALOGEN11
- GLYCOGEN15
- ANDROGEN10
- ALLERGEN9
- CARCINOGEN15
One letter away
- HYDROGEL16
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