Definition of exosphere in English:
exosphere
nounˈɛksə(ʊ)sfɪəˈɛksoʊˌsfɪr
Astronomy The outermost region of a planet's atmosphere.
Example sentencesExamples
- With around three hundred plus kilometers to go, we'll be in the exosphere, aka space, in no time at all.
- Then more indicators flashed to life as the ship skimmed the outer exosphere at Mach 27.
- Since collisions are negligible above the exobase, the molecules in this region, called the exosphere, move along ballistic trajectories under the action of the earth's gravitational field.
- The anti-grav lifted the shuttle up into the exosphere, and then, after obtaining permission from Perimeter Traffic Control, the engines kicked in.
- From the bottom of the exosphere the atmosphere has a thickness of 400 km.
Derivatives
adjective
Astronomy He did not know how much time that his fleet had before the exospheric trap's consequences manifested.
Example sentencesExamples
- He has evaluated the escape flux averaged over an entire 11-year cycle of solar activity, using satellite data on exospheric temperature.
Definition of exosphere in US English:
exosphere
nounˈɛksoʊˌsfɪrˈeksōˌsfir
Astronomy The outermost region of a planet's atmosphere.
Example sentencesExamples
- Then more indicators flashed to life as the ship skimmed the outer exosphere at Mach 27.
- Since collisions are negligible above the exobase, the molecules in this region, called the exosphere, move along ballistic trajectories under the action of the earth's gravitational field.
- The anti-grav lifted the shuttle up into the exosphere, and then, after obtaining permission from Perimeter Traffic Control, the engines kicked in.
- From the bottom of the exosphere the atmosphere has a thickness of 400 km.
- With around three hundred plus kilometers to go, we'll be in the exosphere, aka space, in no time at all.