pneumatic
adjective /njuːˈmætɪk/
/nuːˈmætɪk/
[usually before noun]- filled with air
- a pneumatic tyre
- worked by air under pressure
- pneumatic tools
Word Originmid 17th cent.: from French pneumatique or Latin pneumaticus, from Greek pneumatikos, from pneuma ‘wind’, from pnein ‘breathe’.