(n.) An oxide containing three atoms of oxygen with two atoms (or radicals) of some other substance; thus, alumina, Al2O3 is a sesquioxide.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Sesquioxide. Retrieved September 24, 2026, from http://smartdefine.org/sesquioxide/definitions/2060811 |
| Chicago | Webster's. 2011. "Sesquioxide" http://smartdefine.org/sesquioxide/definitions/2060811 (accessed September 24, 2026). |
| Harvard | Webster's 2011, Sesquioxide, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/sesquioxide/definitions/2060811>. |
| MLA | Webster's. "Sesquioxide" 28 May 2011. Web. 24 September 2026. <http://smartdefine.org/sesquioxide/definitions/2060811> |