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pneumatic

adjective

  1. using or related to air pressure
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Wiktionary

Pronunciation: /n(j)uːˈmæ.tɪk/

adj

Etymology: From Latin pneumaticus, from Ancient Greek πνευματικός (pneumatikós, “relating to wind or air”), from πνεῦμα (pneûma, “wind, air, breath, spirit”), from πνέω (pnéō, “to blow, breath”).

  1. Of, relating to, or resembling air or other gases
  2. Of or relating to pneumatics
  3. Powered by, or filled with, compressed air

    a pneumatic instrument or engine

  4. Having cavities filled with air

    pneumatic cells or bones

  5. Spiritual; of or relating to the pneuma
  6. well-rounded; full-breasted; bouncy

    Her almost pneumatic bust tightened itself, and she was quite prepared to say uncharitable things, as she saw Felicia enter.

    "Every one says I'm awfully pneumatic," said Lenina reflectively, patting her own legs.

noun

Etymology: From Latin pneumaticus, from Ancient Greek πνευματικός (pneumatikós, “relating to wind or air”), from πνεῦμα (pneûma, “wind, air, breath, spirit”), from πνέω (pnéō, “to blow, breath”).

  1. A vehicle, such as a bicycle, whose wheels are fitted with pneumatic tyres.
  2. In the gnostic theologian Valentinus' triadic grouping of man, the highest type; a person focused on spiritual reality (the other two being hylic and psychic).