pneumatic
Word family nounpneumathodepneumaticitypneumaticspneumaadjectivepneumaticpneumaticaladverbpneumatically
pneu·mat·ic /njuːˈmætɪk $ nʊ-/ adjectiveadj [usually before noun] 1 technicalTTC filled with air 充气的 Origin pneumatic (1600-1700) Latin pneumaticus, from Greek, from pneuma “air, breath, spirit”