Wiktionary
depressurization
n. The act, or an instance, of depressurizing; a reduction of atmospheric pressure within a chamber or space vehicle etc.
Usage examples of "depressurization".
He was wearing a pressure suit, but it was a precaution against a vehicle depressurization only, not a suit rated for an extravehicular activity.
Highlights included checking agar emulsions used to bind skin cells for zero-G cloning, a test drill of a new depressurization protocol and a modification of the strap-on peeing device which was slightly embarrassing.
Electrical fires, steam explosions, cabin depressurizations, disruption of chain-of-command.