thermos
/'θə:mɔs/
Definition
Noun: A thermos is a type of insulated container, specifically a vacuum flask, designed to keep liquids hot or cold for extended periods. It maintains the temperature of its contents by using a double-walled container with a vacuum between the walls, which greatly reduces heat transfer.
Usage
A thermos is used to store and transport beverages like coffee, tea, soup, or cold water, allowing them to retain their desired temperature for many hours. It is commonly used for picnics, travel, work, or school lunches.
Examples
- I always fill my thermos with hot coffee before my morning commute.
- The thermos kept the soup warm until lunchtime.
- She packed a thermos of iced tea for the hike.
Advanced Usage
- "Thermos" as a proprietary eponym: The word "Thermos" originated as a brand name (from the Greek , meaning "heat") but has become a generic term for any vacuum flask in common usage. This is similar to how "Kleenex" is used for facial tissues.
- He brought a generic thermos, not the brand-name Thermos.
Variants and Related Words
- Thermos bottle (n): Another common name for a thermos.
- Thermos flask (n): Another common name for a thermos, more common in British English.
- Vacuum flask (n): The technical term for the type of container a thermos is.
- Insulated bottle/jug (n): A more general term for a container designed to maintain temperature.
Synonyms
- Vacuum bottle
- Insulated flask
Related Idioms or Phrases
- To be like a thermos: An informal phrase suggesting someone is good at keeping secrets or not revealing their thoughts (metaphorically keeping things contained).
- You can tell her anything; she's like a thermos.
Noun
-
vacuum flask that preserves temperature of hot or cold drinks
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
