stratosphere

noun

strato·​sphere ˈstra-tə-ˌsfir 

1

: the part of the earth's atmosphere which extends from the top of the troposphere to about 30 miles (50 kilometers) above the surface and in which temperature increases gradually to about 32°F (0°C) and clouds rarely form

2

: a very high or the highest region on or as if on a graded scale

construction costs in the stratosphere

the celebrity stratosphere

stratospheric

ˌstra-tə-ˈsfir-ik 

-ˈsfer-

adjective

stratospherically

ˌstra-tə-ˈsfir-i-k(ə-)lē 

-ˈsfer-

adverb

Did you know?

The stratosphere (strato- simply means "layer" or "level") lies above the earth's weather and mostly changes very little. It contains the ozone layer, which shields us from the sun's ultraviolet radiation except where it's been harmed by manmade chemicals. The levels of the atmosphere are marked particularly by their temperatures; stratospheric temperatures rise only to around 32°—very moderate considering that temperatures in the troposphere below may descend to about -70° and those in the ionosphere above may rise to 1000°.

Examples of stratosphere in a Sentence

Recent Examples on the Web

And to think, just last week Beyoncé was the most exciting thing in the football stratosphere — not anymore. —Kimberly Wilson, Essence, 30 Dec. 2024

The relationship launched Kelce to a new stratosphere of fame and recognition (to the point where Chiefs games' ticket sales routinely experienced surges of over 100%), a fact that many have retroactively applied to his announcement as an SNL host. —Ryan Coleman, EW.com, 28 Dec. 2024

Watch on Deadline Among the major goals is permanently establishing the new L.A. production office, which is working with Hollywood stars on a high-profile slate that could propel Mediapro into a different stratosphere. —Jesse Whittock, Deadline, 27 Dec. 2024

Tucker may not be in the same stratosphere as Soto, Aaron Judge and Shohei Ohtani. —Sahadev Sharma, The Athletic, 11 Dec. 2024

Word History

Etymology

borrowed from French stratosphère, probably from stratus stratus (from the zone's layer-like character, compared to stratus clouds) + -o- -o- + -sphère -sphere

Note: The term was introduced, along with troposphère, by the French meteorologist Léon Tesserenc de Bort (1855-1913). See note at troposphere.

First Known Use

1908, in the meaning defined at sense 1

Phrases Containing stratosphere

• the stratosphere

Kids Definition

stratosphere

noun

strato·​sphere ˈstrat-ə-ˌsfi(ə)r 

: an upper portion of the atmosphere above the troposphere where temperature changes little and clouds rarely form