trioxide

T1R1I1O1X8I1D2E1
/trʌɪˈɒksʌɪd/

noun

Any oxide containing three oxygen atoms in each molecule.

UncommonScrabble 16

Meanings

nountrioxide (plural trioxides)

plural trioxides

  1. chemistryAny oxide containing three oxygen atoms in each molecule.

    Zeona has a thin atmosphere of sulfur dioxide and trioxide, created by volcanic outgassing. There are traces of water vapor in the atmosphere, but over the last five centuries of observation particle counts have decreased 4%.

    2010, BioWare, Mass Effect 2 (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Zeona, Elysta System
  2. chemistryAny organic compound of general formula R-OOO-R', derived from trioxidane.

Synonyms & antonyms

Also see

Origin

  1. Proto-Indo-European*tréyes
  2. Proto-Indo-European*tri-
  3. Proto-Italic*tri-
  4. Latintri-
  5. Englishtri-
  6. Proto-Indo-European*h₂eḱ-der.?
  7. Ancient Greekὀξύς (oxús)
  8. Proto-Indo-European*ǵenh₁-
  9. Proto-Indo-European*ǵénh₁os
  10. Proto-Hellenic*génos
  11. Ancient Greekγένος (génos)
  12. Frenchoxygène
  13. Proto-Indo-European*h₂eḱ-
  14. Proto-Indo-European*h₂eḱéh₁yeti
  15. Proto-Italic*akēō
  16. Latinaceō
  17. Proto-Indo-European*dʰeh₁-
  18. Latinacidu
  19. Frenchacide
  20. Frenchoxide
  21. Englishoxide
  22. Englishtrioxide

From tri- + oxide.

Full word history & related roots →

Translations

Finnish trioksidi
  • trioksidioxide containing three oxygen atoms in each molecule
Hungarian trioxid
  • trioxidoxide containing three oxygen atoms in each molecule
Italian triossido
  • triossidooxide containing three oxygen atoms in each molecule
Spanish trióxido
  • trióxidooxide containing three oxygen atoms in each molecule
Cite this entry
APA

trioxide. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/trioxide

MLA

“trioxide.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trioxide. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “trioxide,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/trioxide.

Source: trioxide on Wiktionary, CC BY-SA 4.0.