Word.ws English Dictionary

sesquioxide

sesquioxide noun: any oxide containing three oxygen atoms for every two atoms of another element.

Noun

sesquioxide (plural sesquioxides)

  1. Any oxide containing three oxygen atoms for every two atoms of another element.

Forms of sesquioxide

pluralsesquioxides

Origin of sesquioxide

From sesqui- (“one and a half, a ratio of three to two”) + oxide.

Words formed from sesquioxide

Questions about sesquioxide

What does sesquioxide mean?
Sesquioxide means any oxide containing three oxygen atoms for every two atoms of another element.
What part of speech is sesquioxide?
Sesquioxide is a noun.
What is the plural of sesquioxide?
The plural of sesquioxide is sesquioxides.

Words near sesquioxide in the dictionary

  1. sesquineolignanes
  2. sesquineolignans
  3. sesquioctave
  4. sesquioctaves
  5. sesquioxidation
  6. sesquioxide
  7. sesquioxides
  8. sesquioxidize
  9. sesquioxidized
  10. sesquioxidizes
  11. sesquioxidizing

Source and license

Adapted from Wiktionary: sesquioxide (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.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-sesquioxide.wav.

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