dewar flask

2 definitions found

dewar flask - Collaborative International Dictionary of English v.0.48 :

  Dewar \Dew"ar\ (d[=u]"[~e]r), Dewar vessel \Dew"ar ves`sel\,
  Dewar flask \Dew"ar flask\ [After Sir James Dewar, British
     physicist.]
     A double-walled glass vessel for holding liquid air, liquid
     nitrogen, 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.
        [Webster 1913 Suppl. +PJC]

dewar flask - WordNet (r) 2.1 (2005) :

  Dewar flask
      n 1: vacuum flask that holds liquid air or helium for scientific
           experiments [syn: Dewar flask, Dewar]