Definition of bell jar in English:

bell jar

noun

  • 1A bell-shaped glass cover used in a laboratory, typically for enclosing samples.

    • ‘A one gramme weight is placed on the scale pan of an electronic balance and the balance is covered by a glass bell jar.’
    • ‘In the white void opposite, he has placed a glass bell jar containing an auction hammer.’
    • ‘I think there's a great deal of misunderstanding about what emptiness is, the idea that emptiness is something that happens under a bell jar when you exhaust all the air from it.’
    • ‘He removed the mud, moistened it, placed it under a bell jar, and subsequently germinated no fewer than eighty-two seeds.’
    • ‘He also used the pump to demonstrate that sound travels through the air: the sound of a watch in the bell jar grew fainter as the air was pumped out.’
    • ‘To prevent accidental extinguishing of the flame, a huge crystalline bell jar with an open top to accommodate escaping smoke was placed over the lantern.’
    • ‘The telescope structure accommodates installation of a 9-m vacuum bell jar for aluminizing the primary mirrors in situ on the telescope.’
    • ‘A kind of invisible bell jar had been dropped over it, protecting it from change.’
    • ‘Originally, cloches were constructed out of glass bell jars and were used to protect individual plants.’
    • ‘Unusual foliage such as ornamental cabbages can make a bold statement, especially if highlighted by accessories such as solar bell jars.’
    1. 1.1An environment in which someone is protected or cut off from the outside world.
      ‘let him stay in his bell jar of perfectionist concentration’

Pronunciation

bell jar