thermos

[thur-muhs]

noun

1. a vacuum bottle or similar container lined with an insulating material, such as polystyrene, to keep liquids hot or cold.

Thermos

/ ˈθɜːməs /

noun

1. a type of stoppered vacuum flask used to preserve the temperature of its contents See also Dewar flask

Word History and Origins

Origin of Thermos¹

First recorded in 1905–10; formerly a trademark

Example Sentences

Instead of using plastic water bottles, I use reusable thermoses or, if I did use a plastic water bottle, I can reuse it.

Read more on Los Angeles Times

“I like to carry a small thermos with hot tea,” he said.

Read more on Seattle Times

Then, according to the Smithsonian, in 1904, “‘thermos’ vacuum bottles began keeping workers' drinks hot or cold until the noon whistle blew” and that same decade they began designing lunchboxes, too.

Read more on Salon

Hayes also owns the green Stanley thermos, which she takes on hikes and snowshoeing trips with hot cocoa or hot water to stay warm.

Read more on Seattle Times

If we’re dealing in clichés, these thermoses belong in the lunchbox of a guy taking a break from the assembly line or in the hands of a construction worker.

Read more on Salon

Related Words

• flask 
• water bottle