pneumatic
adjectiveUK /njuːˈmætɪk/
US /nuːˈmætɪk/
Something pneumatic is filled with air or works by using air.
The pneumatic tires on the bicycle made the ride smooth.
RELATED WORDS
OTHER MEANINGS
2. Operated by compressed air or gas.
The mechanic used a pneumatic drill to break the concrete.
3. Relating to the spirit or soul in some religious contexts.
Early thinkers debated the pneumatic nature of the human soul.
4. Having a lot of empty space or air inside, as some plant tissues.
The stem of the water plant is pneumatic, helping it float.