sesquioxide
noun
ses·qui·ox·ide
ˌses-kwē-ˈäk-ˌsīd 
: an oxide containing three atoms of oxygen combined with two of the other constituent in the molecule
Cite this Entry
“Sesquioxide.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/sesquioxide. Accessed 5 Dec. 2025.
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