pneumatic Meaning, Definition & Usage

  1. adjective of or relating to or using air (or a similar gas)
    • pneumatic drill
    • pneumatic tire

WordNet

Pneu*mat"ic, Pneu*mat"ic*al adjective (Also<
  • Pneumatic
  • Pneumatical
)
Etymology
L. pneumaticus, Gr. , fr. , , wind, air, to blow, breathe; cf. OHG. fnehan: cf. F. pneumatique. Cf. Pneumonia.
Definitions
  1. Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid.
    The pneumatical substance being, in some bodies, the native spirit of the body. Bacon.
  2. Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics; as, pneumatic experiments. "Pneumatical discoveries." Stewart.
  3. Moved or worked by pressure or flow of air; as, a pneumatic instrument; a pneumatic engine.
  4. (Biol.) Fitted to contain air; Having cavities filled with air; as, pneumatic cells; pneumatic bones.

Webster 1913