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hydraulics

[hahy-draw-liks, -drol-iks] /haɪˈdrɔ lɪks, -ˈdrɒl ɪks/
noun, (used with a singular verb)
1.
the science that deals with the laws governing water or other liquids in motion and their applications in engineering; practical or applied hydrodynamics.
Origin
1665-1675
1665-75; see hydraulic, -ics
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for hydraulics'

hydraulics

/haɪˈdrɒlɪks/
noun
1.
(functioning as sing) another name for fluid mechanics
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for hydraulics'

hydraulics

n.

1670s, from hydraulic; also see -ics.

Online Etymology Dictionary, © 2010 Douglas Harper
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hydraulics' in Science
hydraulics
  (hī-drô'lĭks)   
  1. The scientific study of water and other liquids, in particular their behavior under the influence of mechanical forces and their related uses in engineering.

  2. A mechanical device or system using hydraulic components.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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19
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