vacuum flask
A "vacuum flask" is a specialized container designed to maintain the temperature of its contents by minimizing heat transfer.
🇺🇸 US Voice:
🇬🇧 UK Voice:
Definition
B2General
(common)A container with double walls separated by a vacuum to keep liquids hot or cold by preventing heat transfer.
Example
- She brought a vacuum flask of hot coffee for the hike.
- The vacuum flask kept the soup warm until lunchtime.
C1Laboratory
(technical, chemistry)A type of scientific vessel used to store liquefied gases or connect to an aspirator, featuring a vacuum between its walls.
Example
- The chemist used a vacuum flask to store the liquid nitrogen.
- In the lab, we connected the vacuum flask to the aspirator for the experiment.
Similar
Terms that have similar or relatively close meanings to "vacuum flask":