EnglishWikipedia has an article on:

exobase

Wikipedia

Fromexo- +‎base.

exobase (pluralexobases)

1. Thebasealtitude of theexosphere, where particles often escape the atmosphere as it blends intospace.

The exobase is commonly treated as the top of the conventional atmosphere of thick atmospheres. A more complex definition would be the top of the neutral atmosphere.

• exopause
• critical altitude

• English terms prefixed with exo-
• English lemmas
• English nouns
• English countable nouns

• Pages with entries
• Pages with 1 entry