(n.) One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). barium. Retrieved September 21, 2026, from http://smartdefine.org/barium/definitions/1978370 |
| Chicago | Webster's. 2011. "barium" http://smartdefine.org/barium/definitions/1978370 (accessed September 21, 2026). |
| Harvard | Webster's 2011, barium, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/barium/definitions/1978370>. |
| MLA | Webster's. "barium" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/barium/definitions/1978370> |