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1. (n.) bell jar
a bell-shaped glass cover designed esp. for protecting objects or for containing gases or a vacuum in chemical experiments.
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| Definition of 'bell jar' |
Princeton's WordNet |
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1. (noun) bell jar, bell glass
a bell-shaped glass cover used to protect and display delicate objects or to cover scientific apparatus or to contain gases
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| Definition of 'bell jar' |
Webster Dictionary |
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1. bell jar
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
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Definitions of bell jar 
