- a bell-shaped glass jar or cover for protecting delicate instruments, bric-a-brac, or the like, or for containing gases or a vacuum in chemical experiments.
Origin of bell jar
First recorded in 1875–80
Also called bell glass.
Bell Jar, The
- a novel (1963) by Sylvia Plath.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for bell glass
I cover this sheet with a bell-jar standing in a depth of water.The Life of the Spider
J. Henri Fabre
The solution, evaporated in a bell-jar over sulphuric acid, yields crystals which are neutral.
By the vivid combustion of phosphorus in a stream of dry atmospheric air, or under a bell-jar, copiously supplied with dry air.
In the very middle of the bell-jar of visibility granted them all at once, stood a black rectangular object.Equation of Doom</p>
The flask is allowed to remain for an hour in a cool place, and is then placed under a bell-jar, at a temperature of 70° Fahr.Meteorology
J. G. M'Pherson
- a bell-shaped glass cover used to protect flower arrangements or fragile ornaments or to cover apparatus in experiments, esp to prevent gases escaping
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012