SG Heritage Dictionary

Pneumatical [Adjective] Webster's Dictionary 1913

1. Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid.

2. Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics; as, pneumatic experiments.

3. Moved or worked by pressure or flow of air; as, a pneumatic instrument; a pneumatic engine.

4. Fitted to contain air; Having cavities filled with air; as, pneumatic cells; pneumatic bones.