Word.ws English Dictionary

trihydrogen

trihydrogen noun: a cation triangular molecule composed of three hydrogen atoms, or matter composed of such molecules. Symbol: H₃⁺.

Noun

trihydrogen (countable and uncountable, plural trihydrogens)

  1. A cation triangular molecule composed of three hydrogen atoms, or matter composed of such molecules. Symbol: H₃⁺.
    Synonyms:
    hydrogenonium, hydrogen trimer, protonated molecular hydrogen, triatomic hydrogen

Synonyms of trihydrogen

  • hydrogenonium
  • hydrogen trimer
  • protonated molecular hydrogen
  • triatomic hydrogen

Forms of trihydrogen

pluraltrihydrogens

Origin of trihydrogen

From tri- + hydrogen.

Words formed from trihydrogen

  • trihydrogen diphosphate
  • trihydrogen oxide
  • trihydrogen tetrafluoride

Questions about trihydrogen

What does trihydrogen mean?
Trihydrogen means a cation triangular molecule composed of three hydrogen atoms, or matter composed of such molecules. Symbol: H₃⁺.
What part of speech is trihydrogen?
Trihydrogen is a noun.
What is the plural of trihydrogen?
The plural of trihydrogen is trihydrogens.

Words near trihydrogen in the dictionary

  1. trihydro-
  2. trihydrochloride
  3. trihydrochlorides
  4. trihydrofluoride
  5. trihydrofluorides
  6. trihydrogen
  7. trihydrogens
  8. trihydroxy
  9. trihydroxyanthraquinone
  10. trihydroxyanthraquinones
  11. trihydroxybenzene

Source and license

Adapted from Wiktionary: trihydrogen (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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Cite this entry: “trihydrogen.” Word.ws, https://word.ws/trihydrogen. Based on Wiktionary, CC BY-SA 4.0.