H₂O
From Wiktionary, the free dictionary
Pronunciation
Symbol
H₂O
- (generally) Water (even if not chemically pure).
- 1992, John R. Searle, The Rediscovery of the Mind (in English), →ISBN, page 157:
- A man may believe, for example, that the star in the sky is the Morning Star without believing that it is the Evening Star. A man may, for example, want to drink a glass of water without wanting to drink a glass of H₂O.
- (chemistry) A molecule of water.
Usage notes
- Deuterium should be named by the chemical symbol "2H", not "D".[1] Therefore, even heavy water (often called D2O) should properly be called H2O; 2H2O to be precise. Likewise, super-heavy water should be called 3H2O, not T2O.
Derived terms
Related terms
- D₂O (“heavy water”)
- DHO (“semi-heavy water”)
See also
- H₂O₂ (“hydrogen peroxide”)
- English DHMO (“dihydrogen monoxide”)
References
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