pneumatic

Meanings

1. 1
   adj

   operated by compressed air or another gas

   Workers used a pneumatic drill to break up the concrete.

2. 2
   adj

   containing or inflated with air or gas

   The bicycle's pneumatic tires softened the ride over rough ground.

From Latin pneumaticus, from Greek pneumatikos ('of wind, air, breath, or spirit'), from pneuma ('wind, breath, spirit'), itself from pnein ('to blow or breathe'). Mechanical uses developed from the physical sense 'relating to air or gas.'

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