Vacuum Flask (Noun)
Meaning
Flask with double walls separated by vacuum; used to maintain substances at high or low temperatures.
Classification
Nouns denoting man-made objects.
Examples
- The scientist carefully poured the liquid nitrogen into a vacuum flask to keep it at extremely low temperatures.
- A thermos is essentially a vacuum flask that maintains the temperature of liquids for several hours.
- A glass vacuum flask was used to store the ice-cold mixture for later analysis in the laboratory.
- The experimental design relied on a vacuum flask to maintain a uniform temperature of 200 degrees Celsius inside.
- The engineer was amazed by the vacuum flask's ability to hold ice at a temperature far below freezing for several days.