Found 2 items, similar to bell jar.
English → English (WordNet) Definition: bell jar 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]
English → English (gcide) Definition: 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. [1913 Webster] 2. The measure of what is contained in a jar; as, a jar of oil; a jar of preserves. [1913 Webster] Bell jar, Leyden jar. See in the Vocabulary. [1913 Webster] 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. [1913 Webster]