Noun
pressurisation (plural pressurisations)
(British spelling) The act or process of increasing pressure within a space.
Concorde's pressurisation was set to an altitude at the lower end of this range, convert. citation Concorde's maximum cruising altitude was convert; subsonic airliners typically cruise below convert. Source: Internet
Cabin pressurisation Airliner cabins were usually maintained at a pressure equivalent to 6,000–8,000 feet (1,800–2,400 m) elevation. Source: Internet
This is primarily because rockets almost universally use dense liquid or solid reaction mass which gives a much smaller volume and hence the pressurisation system that supplies the nozzle is much smaller and lighter for the same performance. Source: Internet