/ haɪˈdrɔːlɪk; NAmE ; BrE also -ˈdrɒl-/ adjective [ usually before noun ]
( of water, oil, etc. ) moved through pipes, etc. under pressure :
( of a piece of machinery ) operated by liquid moving under pressure :
connected with hydraulic systems :
► hy·draul·ic·al·ly / -kli; NAmE / adverb :
hydraulically operated doors
early 17th cent.: via Latin from Greek hudraulikos , from hudro- water + aulos pipe.