What is another word for thermopause?
Pronunciation: [θˈɜːməpˌɔːz] (IPA) 
The thermopause is a layer of Earth's atmosphere that separates the thermosphere from the exosphere. This region is characterized by a significant increase in temperature with height and marks the point where the atmosphere becomes tenuous enough that the effects of the Sun's radiation dominate over atmospheric gases. Synonyms for this word include thermospheric boundary, thermal barrier, and thermospheric interface. Other related terms include the mesopause, which is the dividing line between the mesosphere and thermosphere, and the exobase, which marks the point where atmospheric gases become too rarefied to behave as a gas. Understanding these different layers of the atmosphere is crucial in understanding the physical processes that occur in our planet's atmosphere.
