A glass vessel, varying in size, open at the bottom and closed at the top like a bell, and having a knob or handle at the top for lifting it. It is used for a great variety of purposes; as, with the air pump, and for holding gases, also for keeping the dust from articles exposed to view.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bell jar. Retrieved September 23, 2026, from http://smartdefine.org/bell_jar/definitions/1979363 |
| Chicago | Webster's. 2011. "bell jar" http://smartdefine.org/bell_jar/definitions/1979363 (accessed September 23, 2026). |
| Harvard | Webster's 2011, bell jar, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/bell_jar/definitions/1979363>. |
| MLA | Webster's. "bell jar" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/bell_jar/definitions/1979363> |