Hydraulic definition

hī-drôlĭk
Setting or hardening under water.

Hydraulic mortar.

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The definition of hydraulic is operated by the moving force of a liquid.

An example of a hydraulic machine is one that is powered by water.

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Of hydraulics.
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Capable of hardening under water, as cement.
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Pertaining to water.

I know not why this entrance is left so neglected, as we are not in want of able engineers in France, in the hydraulic branch, a part of the mathematics to which I have most applyed myself. — M. Le Page Du Pratz, History of Louisisana (PG), p. 47

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Related to hydraulics.
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Of, involving, moved by, or operated by a fluid, especially water, under pressure.
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Able to set and harden under water, as Portland cement.
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Of or relating to hydraulics.
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Operated by the movement and force of liquid; specif., operated by the pressure created when a liquid is forced through an aperture, tube, etc.

Hydraulic brakes.

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Operated by the pressure of water or other liquids. Hydraulic systems, such as hydraulic brakes, allow mechanical force to be transferred along curved paths (through pipes or tubes) that would be difficult for solid mechanisms, such as levers or cables, to negotiate efficiently.
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Relating to hydraulics.
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Origin of hydraulic

  • Latin hydraulicus from Greek hudraulikos from hudraulis water organ hudro-, hudr- hydro- aulos pipe, flute

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek ὑδραυλικός (hudraulikos, “of a water organ”), from ὕδραυλις (hudraulis, “water organ”).

    From Wiktionary