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hydraulic

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adjective hy·drau·lic \hī-ˈdrȯ-lik\

Simple Definition of hydraulic

  • : operated by the pressure of a fluid

  • : occurring or used in a hydraulic system

Full Definition of hydraulic

  1. 1 :  operated, moved, or effected by means of water

  2. 2 a :  of or relating to hydraulics <hydraulic engineer> b :  of or relating to water or other liquid in motion <hydraulic erosion>

  3. 3 :  operated by the resistance offered or the pressure transmitted when a quantity of liquid (as water or oil) is forced through a comparatively small orifice or through a tube <hydraulic brakes>

  4. 4 :  hardening or setting under water <hydraulic cement>

hy·drau·li·cal·ly play \-li-k(ə-)lē\ adverb

Origin of hydraulic

Latin hydraulicus, from Greek hydraulikos, from hydraulis hydraulic organ, from hydr- + aulos reed instrument — more at alveolus


First Known Use: 1661


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