Definition of bell jar in US English:

bell jar


  • 1A bell-shaped glass cover used for covering delicate objects or 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.’
    • ‘The telescope structure accommodates installation of a 9-m vacuum bell jar for aluminizing the primary mirrors in situ on the telescope.’
    • ‘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.’
    • ‘A kind of invisible bell jar had been dropped over it, protecting it from change.’
    • ‘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.’
    • ‘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.’
    • ‘In the white void opposite, he has placed a glass bell jar containing an auction hammer.’
    1. 1.1 An environment in which someone is protected or cut off from the outside world.
      ‘let him stay in his bell jar of perfectionist concentration’
      • ‘There's me, pleading with my friends to let go of the emotions making them ill and here I am in my own bell jar, not for the attention but for the quiet, you see.’
      • ‘To the person in the bell jar… the world itself is a bad dream.’
      • ‘Its title, the bell jar, is a metaphorical explanation for what her insanity felt like.’
      • ‘Unlike Verdun, which the French quickly covered with a bell jar of remembrance, the Somme was pretty much rebuilt, monumented, or plowed under.’
      • ‘Everything seems safely enclosed in a bell jar of the most delicate glass… But inside me there is no peace.’


bell jar

/ˈbɛl ˌdʒɑr//ˈbel ˌjär/