Luftlos
Luftlos is a German adjective that means without air or free of air. It derives from Luft (air) and los (free of). In common usage, it describes environments or substances that lack breathable air or any significant amount of gaseous matter.
In science and engineering, luftlos refers to spaces with negligible air content, typically described as vacuums
In planetary science and astronomy, airless bodies such as the Moon or Mercury are described as luftlos,
In culture and media, luftlos is used as a motif or title in German-language works to evoke
See also: Luft, Vakuum, Luftleere, Vakuumtechnik, Luftdicht.