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What is "bell jar"

The Collaborative International Dictionary
Bell jar

Jar \Jar\ (j[aum]r), n. [F. jarre, Sp. jarra, from Ar. jarrah ewer; cf. Pers. jarrah.]

  1. A deep, broad-mouthed vessel of earthenware or glass, for holding fruit, preserves, etc., or for ornamental purposes; as, a jar of honey; a rose jar.
    --Dryden.

  2. The measure of what is contained in a jar; as, a jar of oil; a jar of preserves.

    Bell jar, Leyden jar. See in the Vocabulary.

Bell jar

Bell jar \Bell" jar`\ (Phys.) 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.

Wiktionary
bell jar

n. A piece of laboratory equipment used for creating vacuums, often made of glass in a bell-like shape.

WordNet
bell jar

n. a bell-shaped glass cover used to protect and display delicate objects or to cover scientific apparatus or to contain gases [syn: bell glass]

Wikipedia
Bell jar

A bell jar is a glass jar, similar in shape to a bell, and can be manufactured from a variety of materials (ranging from glass to different types of metals). Bell jars are often used in laboratories to form and contain a vacuum; they may also serve as display cases or transparent dust covers.

Bell jar (disambiguation)

Bell Jar can mean:

  • bell jar, a piece of glassware used mainly for scientific purposes
  • The Bell Jar, a literary work by Sylvia Plath.
    • The Bell Jar (film): a 1979 film adaptation of that novel.

Usage examples of "bell jar".

Some kind of dire temperature inversion had clamped itself down over the city like a bell jar, trapping and concentrating the cocktail of dust, automobile exhaust, coal smoke, woodsmoke, manure smoke, and the ammoniated gasses that rose up from the stewn excreta of millions of people and animals.

Above my head was a darkened glass cupola, reachable only by ladder, and through the cupola I heard thunder resonate as through a bell jar.

The air could not have been stiller if the entire farm had been covered by a bell jar.

It folded up to fit in a helmet the size of a bell jar suitable for displaying a human head in anatomy class.

As he had done in the Nami offices, the Pack Rat was taping all this, avidly preserving Killan's aural history as if that would allow him to capture her like a butterfly in a bell jar.

Inverness's money in a tall bell jar and returned to their car, where the radio was beeping steadily.

Some kind of dire temperature inversion had clamped itself down over the city like a bell jar, trap­.

I've built this wall around myself brick by brick, a prison, a bell jar, and now I can't get out.