Bell jar

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A piece of laboratory equipment used for creating vacuums, often made of glass in a bell-like shape.
  2. 2
    a bell-shaped glass cover used to protect and display delicate objects or to cover scientific apparatus or to contain gases wordnet
  3. 3
    A bell-shaped glass used to cover and protect items such as food.