Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: hydraulicus, from Greek, from hydraulis 'organ worked by water'

hydraulic

 adjective
     
Related topics: Physics, Mechanical
hy‧draul‧ic [usually before noun]
TEM moved or operated by the pressure of water or other liquid:
a hydraulic pump
hydraulic brakes
—hydraulically adverb
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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