aeropauses
/ˈɛrəˌpɔzɪz/
noun
- The boundary regions in the atmosphere where the atmosphere becomes too thin for aircraft to fly or for certain atmospheric processes to occur.
- The aeropauses mark the transition between Earth's atmosphere and outer space.
- Scientists study the aeropauses to understand where space begins.
- Rockets must pass through the aeropauses to reach orbit.