PNEUMATICAL, a. numat'ic. [Gr. breath, spirit; to breathe or blow.] 1. Consisting of air, as a thin compressible substance; opposed to dense or solid substances. The pneumatic substance being, in some bodies, the native spirit of the body.2. Pertaining to air, or to the philosophy of its properties; as pneumatic experiments; a pneumatic engine.3. Moved or played by means of air; as a pneumatic instrument of music.
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