noun
thermos
THUR-mus/θˈɝmʌs/
An insulated container that keeps liquids hot or cold.
The thermos has an insulated gap between its inner vessel and outer wall.
Etymology
Greek thermos, meaning “hot,” supplied the trademark name for the insulated container. The name highlights keeping contents hot, although the container also keeps drinks cold.
In context
this is actually a tea thermos flask it's designed to put your hot tea in there it's actually got a top that you can put on um to keep your tea nice and hot
More examples
- I pack a thermos of cold lemonade for the hike.
- These thermoses keep our soup warm until lunchtime.
- Rinse the thermos after you finish your tea.
Forms
thermos · thermoses
Similar words
- vacuum bottle
- Specifically identifies a container insulated by a vacuum between walls.
- flask
- A broader container term that does not necessarily imply insulation.