IPA: /ˈɛərˌspeɪs/
KK: /ˈɛrˌspeɪs/
A specific area of the atmosphere that is controlled for the purpose of air traffic management, often above a certain land area or near an airport.
The airplane entered the airspace of the country after crossing the border.
Airspace → It is formed from "air" (from Old English "aer", meaning the invisible gaseous substance surrounding the Earth) and "space" (from Latin "spatium", meaning an extent or area). The word "airspace" refers to the area of the atmosphere above a certain territory or location.
Think of the 'air' around us and the 'space' it occupies — together, they describe the area in the atmosphere.