(n.) An oxide containing three atoms of oxygen; as, sulphur trioxide, SO3; -- formerly called tritoxide.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). trioxide. Retrieved September 20, 2026, from http://smartdefine.org/trioxide/definitions/2074789 |
| Chicago | Webster's. 2011. "trioxide" http://smartdefine.org/trioxide/definitions/2074789 (accessed September 20, 2026). |
| Harvard | Webster's 2011, trioxide, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/trioxide/definitions/2074789>. |
| MLA | Webster's. "trioxide" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/trioxide/definitions/2074789> |