the stratosphere
noun /ðə ˈstrætəsfɪə(r)/
/ðə ˈstrætəsfɪr/
[singular]Idioms - the layer of the earth’s atmosphere between about 10 and 50 kilometres above the surface of the earth compare ionosphereTopics Spacec2
Idioms
in/into the stratosphere (informal)
- at or to an extremely high level
- The technology boom sent share prices into the stratosphere.