aeropause

[ air-uh-pawz ]
/ ˈɛər əˌpɔz /

noun Aeronautics.

the indefinite boundary in the upper atmosphere beyond which the air is too thin for conventional aircraft to operate.

Origin of aeropause

First recorded in 1950–55; aero- + pause

British Dictionary definitions for aeropause

aeropause
/ (ˈɛərəˌpɔːz) /

noun

the region of the upper atmosphere above which aircraft cannot fly