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Line breaks: pneu|mat¦ic
Pronunciation: /njuːˈmatɪk

Definition of pneumatic in English:


1Containing or operated by air or gas under pressure: the machines with pneumatic loading are more efficient
More example sentences
  • The pneumatic pump operated the mechanical heart and sustained Clark for 112 days.
  • Any pressurized bottle used for pneumatic operation must be filled with compressed air, nitrogen, or CO2.
  • In a procedure which began at seven o'clock in the morning and which lasted for a little under four hours, the 1,000 metric tonne roof was raised from inside the storage tank's structure using pneumatic pressure.
1.1 Zoology (Chiefly of cavities in the bones of birds) containing air.
Example sentences
  • Ornithologists have long sought to explain pneumatic bones in birds as an adaptation to some aspect of their lifestyle, such as the great benefit they offer for energy savings in flying.
  • A pneumatic dermal layer is present beneath the skin.
  • The bones were hollow and thin-walled, but also pneumatic: that is, they had openings in their walls that allowed air sacs from the respiratory system to enter the bones.


mid 17th century: from French pneumatique or Latin pneumaticus, from Greek pneumatikos, from pneuma 'wind', from pnein 'breathe'.



Example sentences
  • A pneumatically operated ball valve controls the flow of liquid nitrogen through each lance, and the entire process is sequenced from a pushbutton control panel.
  • The first externally powered prosthetic limbs were built in Germany around 1915, although it was not until the 1950s that electrically and pneumatically powered devices appeared for general use.
  • Graphically, the game is now stunning, with superb character animation and great backgrounds - although some might object to the pneumatically proportioned women.


Pronunciation: /njuːməˈtɪsɪti/

Definition of pneumatic in:

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