stratospheric
adjective /ˌstrætəˈsferɪk/
/ˌstrætəˈsfɪrɪk/, /ˌstrætəˈsferɪk/
- (specialist) in the layer of the earth's atmosphere between about 10 and 50 kilometres above the surface of the earth
- stratospheric clouds/ozone
- (informal) extremely high
- stratospheric levels of success