unpressurized

un pres sur ized |ˌənˈpreSHəˌrīzd ˌənˈprɛʃəˌraɪzd | ▶adjective (of a gas or its container ) not having raised pressure that is produced or maintained artificially. • (of an aircraft cabin ) not having normal atmospheric pressure maintained at a high altitude.

unpressurized

unpressurized |ʌnˈprɛʃərʌɪzd |(also unpressurised ) ▶adjective (of a gas or its container ) not having raised pressure that is produced or maintained artificially. • (of an aircraft cabin ) not having normal atmospheric pressure maintained at a high altitude.