Run by or using compressed air: a pneumatic drill.
Filled with air, especially compressed air: a pneumatic tire.
Zoology Having cavities filled with air, as the bones of certain birds.
Of or relating to the pneuma; spiritual.
[French pneumatique, from Latin pneumaticus, from Greek pneumatikos, from pneuma, pneumat-, wind; see pneu- in Indo-European roots.] pneu·mat'i·cal·ly adv., pneu'ma·tic'i·ty (nōō'mə-tĭs'ĭ-tē, nyōō'-) n.
(nōō-māt'ĭk, nyōō-) 