pneu ‧ mat ‧ ic /njuːˈmætɪk $ nʊ-/ BrE AmE adjective [usually before noun]
[ Date: 1600-1700 ; Language: Latin ; Origin: pneumaticus , from Greek , from pneuma 'air, breath, spirit' ]
1 . technical filled with air:
pneumatic tyres
2 . worked by air pressure:
a pneumatic pump