അർത്ഥം : Vacuum flask that holds liquid air or helium for scientific experiments.
പര്യായപദങ്ങൾ : dewar flask
അർത്ഥം : Scottish chemist and physicist noted for his work in cryogenics and his invention of the Dewar flask (1842-1923).
പര്യായപദങ്ങൾ : sir james dewar