I. hīˈdrȯlik, -lēk also -räl- noun
( -s )
Etymology: Latin hydraulicus, adjective
: a hydraulic machine or device
brakes are four-wheel hydraulics — Motor Life
specifically : hydraulic organ
II. (ˈ) ̷ ̷| ̷ ̷ ̷ ̷ adjective
Etymology: Latin hydraulicus being a hydraulic organ, from Greek hydraulikos, from hydraulis hydraulic organ (from hydr- + -aulis, from aulos reed instrument like an oboe) + -ikos -ic — more at alveolus
1. : operated, moved, or effected by means of water
2.
a. : of or relating to hydraulics
hydraulic engineer
b. : of or relating to water or other liquid in motion
hydraulic erosion … of shore reef fronts — Scientific Monthly
3. : operated by the resistance offered or the pressure transmitted when a quantity of water, oil, or other liquid is forced through a comparatively small orifice or through a tube — used of a mechanism
hydraulic buffer
hydraulic turbine
hydraulic equipment
hydraulic system
also : relating to a device operated in this way
hydraulic pressure
hydraulic action
4. : hardening or setting under water
hydraulic mortar
hydraulic bond
• hy·drau·li·cal·ly -lə̇k(ə)lē, -lēk-, -li adverb
III. ̷ ̷ˈ ̷ ̷ ̷ ̷ transitive verb
( hydraulicked ; hydraulicked ; hydraulicking ; hydraulics )
: to subject to the action of a powerful stream or jet of water or excavate in this manner : sluice