A combining form (also used adjectively) denoting that three atoms or equivalents of the substance to the name of which it is prefixed are combined with two of some other element or radical; as, sesquibromide, sesquicarbonate, sesquichloride, sesquioxide.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sesqui-. Retrieved September 22, 2026, from http://smartdefine.org/sesqui-/definitions/2060803 |
| Chicago | Webster's. 2011. "sesqui-" http://smartdefine.org/sesqui-/definitions/2060803 (accessed September 22, 2026). |
| Harvard | Webster's 2011, sesqui-, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/sesqui-/definitions/2060803>. |
| MLA | Webster's. "sesqui-" 28 May 2011. Web. 22 September 2026. <http://smartdefine.org/sesqui-/definitions/2060803> |