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1. Of, involving, moved by, or operated by a fluid, especially water, under pressure.
2. Able to set and harden under water, as Portland cement.
3. Of or relating to hydraulics.

[Latin hydraulicus, from Greek hudraulikos, from hudraulis, water organ : hudro-, hudr-, hydro- + aulos, pipe, flute.]

hy·drau′li·cal·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.hydraulically - in a hydraulic manner; "the block is then tested hydraulically to its full design test pressure on each stream separately"
meî vökvaafli; vökvafræîilega
hidrolik olarak


(haiˈdroːlik) adjective
1. worked by the pressure of water or some other liquid. hydraulic brakes.
2. relating to hydraulics. a hydraulic engineer.
hyˈdraulically adverb
hyˈdraulics noun singular
the study of the behaviour of moving liquids (eg of water in pipes).
References in periodicals archive ?
Delivery of 2 pieces 2-axle all-wheel drive multi-purpose tool carrier with a wheelbase up to 3 200 mm, a minimum payload of 6 800 kg in case of maximum mass to 13 800kg drive options for stem appliances hydraulically or mechanically and set top boxes hydraulically.
The NT8000i is a closed-loop rate control system for hydraulically driven apron and floor systems on manure, lime, and fertilizer spreaders that provides precision guidance and prescription-based control of the spreading rate.
The machine is equipped with three hydraulically folding discharge conveyors allowing for maximum stockpiling capacity and associated benefits of rapid set up and tear down times.
The pushing, pulling and lifting is hydraulically activated with ample force to do the job.
The two Dewhurst wellbores are parallel to one another and were hydraulically stimulated at the same time.
As of July 1, oil and natural gas companies must disclose the chemicals used when hydraulically fracturing rock to extract oil and gas .
Herzog also offers a new BHP-type pneumatic or hydraulically driven Bolt shut-off nozzle designed to handle pressures up to 3000 bar (13,500 psi) and temperatures up to 750 F.
We anticipated demand for an alternative to traditional, hydraulically actuated braking and began the pursuit of electronically actuated braking more than a decade ago," Goodrich Airframe Systems Segment President Jack Carmola said.
The doors are opened, and the tilter hydraulically raises the container from zero to 90 degrees for loading with a material handler, conveyor or wheel loader.
The HATS Series Aluminum Trench Shield, a new product line of lightweight shields that incorporates hydraulically adjustable spreaders, has been announced by PRO-TEC Equipment, Charlotte, MI.
Other options include hydraulically operated side plates, upper conveyor cover, an auxiliary rotor drive and a high pressure washdown system.
In addition, the base Cyclone V6 has variable timing on the intake cams that uses a hydraulically activated spool valve to rotate the cams up to 40[degrees] within half a second.