Definition of vacuum flask in English English dictionary
A Dewar vessel is the scientific version, and is most often used to store liquified gases
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
A type of glass flask used in a laboratory similar to an Erlenmeyer flask, but with a side spout used for conection to an aspirator. Also known as a Büchner flask
flask with double walls separated by vacuum; used to maintain substances at high or low temperatures
A vacuum flask is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin silvery glass walls with a vacuum between them. a special container that keeps liquids hot or cold = thermos