thermos bottle
Definition
Noun: A thermos bottle is a type of insulated container, specifically a vacuum flask, designed to maintain the temperature of its contents. It keeps hot drinks hot and cold drinks cold for extended periods by using a double-walled construction with a vacuum between the walls to minimize heat transfer.
Usage
A thermos bottle is used for storing and transporting beverages or sometimes soups while preserving their original temperature. It is commonly used for picnics, travel, work, or school lunches.
Examples
- I fill my thermos bottle with coffee every morning before my commute.
- For the hike, she packed a thermos bottle full of cold water.
- The soup was still steaming hot at lunchtime thanks to the thermos bottle.
Advanced Usage
- As a generic term: While "Thermos" is a trademarked brand name, "thermos bottle" is often used generically to refer to any vacuum flask.
- Can you pass me that thermos bottle? I need a drink.
Variants and Related Words
- Thermos (noun, often used interchangeably): A brand name that is commonly used as a generic term for a vacuum flask.
- He poured tea from his Thermos.
- Vacuum flask (noun): The technical term for the type of container a thermos bottle is.
- The scientific principle behind a thermos bottle is that of a vacuum flask.
- Insulated bottle/flask (noun): A broader term for any bottle designed to maintain temperature, which may not necessarily use a vacuum.
- An insulated bottle might use foam, while a thermos bottle uses a vacuum.
Synonyms
- Vacuum flask
- Insulated flask
- Insulated bottle
Related Idioms or Phrases
- To keep something on ice: While not directly about a thermos, this idiom means to keep something cold or in reserve. A thermos bottle can perform this function literally.
- We'll keep the lemonade on ice in the thermos bottle until the guests arrive.
Noun
-
vacuum flask that preserves temperature of hot or cold drinks
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