vacuum flask

• Récipient conçu pour maintenir les liquides chauds ou froids pendant une longue durée, composé d'une double paroi avec un vide entre les parois pour réduire les transferts de chaleur.

A container designed to keep liquids hot or cold for extended periods, consisting of a double-walled flask with a vacuum between the walls to reduce heat transfer.

1. Insulated containerB1formal

   A container designed to keep liquids hot or cold by using a vacuum between its walls to reduce heat transfer.

   bouteille thermos

   • She poured hot coffee into the vacuum flask before the hike.
   • The vacuum flask kept the soup warm for hours.
   • He always carries a vacuum flask of tea to work.