verb (used with object), de·pres·sur·ized, de·pres·sur·iz·ing.
- to remove the air pressure from (a pressurized compartment of an aircraft or spacecraft).
- to relieve the tensions of; cause to relax: A week’s vacation should depressurize me.
verb (used without object), de·pres·sur·ized, de·pres·sur·iz·ing.
- to lose air pressure: The airplane cabin depressurized almost instantly.
- (tr) to reduce the pressure of a gas inside (a container or enclosed space), as in an aircraft cabin