Bible Dictionaries
Dewar Vessel
Webster's Dictionary
A double-walled glass vessel for holding liquid air, etc., having the space between the walls exhausted so as to prevent conduction of heat, and sometimes having the glass silvered to prevent absorption of radiant heat; - called also, according to the particular shape, Dewar bulb, Dewar tube, etc.
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Bibliography Information
Webster, Noah. Entry for 'Dewar Vessel'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/d/dewar-vessel.html. 1828.