Word.ws English Dictionary

hydrogen monoxide

hydrogen monoxide noun: dihydrogen monoxide (water (H₂O), but not hydrogen peroxide (H₂O₂) or the hydroxyl radical (-OH)).

Noun

hydrogen monoxide (uncountable)

  1. (informal) dihydrogen monoxide (water (H₂O), but not hydrogen peroxide (H₂O₂) or the hydroxyl radical (-OH))

Questions about hydrogen monoxide

What does hydrogen monoxide mean?
Hydrogen monoxide means dihydrogen monoxide (water (H₂O), but not hydrogen peroxide (H₂O₂) or the hydroxyl radical (-OH)).
What part of speech is hydrogen monoxide?
Hydrogen monoxide is a noun.

Words near hydrogen monoxide in the dictionary

  1. hydrogen lamps
  2. hydrogen line
  3. hydrogen lines
  4. hydrogen maser atomic clock
  5. hydrogen maser atomic clocks
  6. hydrogen monoxide
  7. hydrogen nitrate
  8. hydrogen oxide
  9. hydrogen peroxide
  10. hydrogen phosphate
  11. hydrogen potassium carbonate

Source and license

Adapted from Wiktionary: hydrogen monoxide (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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