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pneumatic jack


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Also see: jack

WordReference Random House Learner's Dictionary of American English © 2026
pneu•mat•ic /nʊˈmætɪk, nyʊ-/USA pronunciation   adj. 
  1. Physicsof or relating to air, gases, or wind.
  2. Physicsfilled with, operated by, or containing compressed air:pneumatic tires.
pneu•mat•i•cal•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2026
pneu•mat•ic  (nŏŏ mat′ik, nyŏŏ-),USA pronunciation adj. 
  1. Physicsof or pertaining to air, gases, or wind.
  2. Physicsof or pertaining to pneumatics.
  3. Physicsoperated by air or by the pressure or exhaustion of air:a pneumatic drill.
  4. Physicsfilled with or containing compressed air, as a tire.
  5. Transportequipped with pneumatic tires.
  6. Religion[Theol.]of or pertaining to the spirit; spiritual.
  7. Zoologycontaining air or air cavities.

n. 
  1. a pneumatic tire.
  2. Transporta vehicle having wheels with such tires.
  • Greek pneumatikós pertaining to air, breath or wind, spiritual, equivalent. to pneumat- (stem of pneûma; see pneuma) + -ikos -ic
  • Latin pneumaticus
  • 1650–60
pneu•mat′i•cal•ly, adv. 
pneu•ma•tic•i•ty  (no̅o̅′mə tis′i tē, nyo̅o̅′-),USA pronunciation n. 
Collins Concise English Dictionary © HarperCollins Publishers::
pneumatic / njʊˈmætɪk/
also: pneumatical / njʊˈmætɪkəl/
  1. of or concerned with air, gases, or wind
    Compare hydraulic
  2. (of a machine or device) operated by compressed air or by a vacuum
  3. containing compressed air: a pneumatic tyre
  4. (of the bones of birds) containing air spaces which reduce their weight as an adaptation to flying
Etymology: 17th Century: from Late Latin pneumaticus of air or wind, from Greek pneumatikos of air or breath, from pneumapneuˈmatically

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