The word hydraulic can refer to an object involving, moved by, or operated by a fluid. This fluid is usually water and the word hydraulic is often used in terms of engineering or mathematics.
The brakes in my car are hydraulic.
That floor is supported by a hydraulic lift.
The hydraulic pressure was reduced when he sprung a leak in the hose.
There's a leak, somewhere in your hydraulic system.
Hydraulic.
It is dangerous to operate hydraulic lifters while the vehicle is in motion. The forty-niners' hydraulic mining methods devastated California's environment.
The definition of something describes exactly what the word is and how the word can be used. You will also see synonyms for the word and if the word is a noun or adjective when viewing the definition.
The dictionary definition of a word
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The plural of hydraulic is hydraulics. Creating the plural form of this word is accomplished by adding an s to the singular form.
a definition of a compound word is jack-ass.
The word that goes with that definition is "door."