pneu·mat·ic (n-mătĭk, ny-) also pneu·mat·i·cal (-ĭ-kəl)
1. Of or relating to air or other gases.
2. Of or relating to pneumatics.
a. Run by or using compressed air: a pneumatic drill.
b. Filled with air, especially compressed air: a pneumatic tire.
4. Zoology Having cavities filled with air, as the bones of certain birds.
5. Of or relating to the pneuma; spiritual.
[French pneumatique, from Latin pneumaticus, from Greek pneumatikos, from pneuma, pneumat-, wind; see pneu- in the Appendix of Indo-European roots.]
pneu′ma·tici·ty (n′mə-tĭsĭ-tē, ny′-) n.
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