Etymology:
The word "thermos" originates from the Greek word "thermos," which means "hot" or "warm."
Meaning:
A thermos is a double-walled, vacuum-insulated container that is designed to keep liquids hot or cold for extended periods of time.
Origin:
The concept of the thermos was first developed by Scottish physicist and chemist Sir James Dewar in 1892. Dewar invented a double-walled glass flask with a vacuum between the walls, which he called a "Dewar flask."
In 1904, German glassblowing company Thermos GmbH began producing commercial thermoses based on Dewar's design. The company named its product "Thermos," after the Greek word for "hot."
The term "thermos" has since become a genericized trademark, and it is now used to refer to any type of double-walled, vacuum-insulated container.
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