n. The engineering science that deals with practical applications where liquid is in motion and transmits energy.
n. The hydraulic system of a vehicle or other machine.
the GNU version of the Collaborative International Dictionary of English
n. That branch of science, or of engineering, which treats of fluids in motion, especially of water, its action in rivers and canals, the works and machinery for conducting or raising it, its use as a prime mover, and the like.
The Century Dictionary and Cyclopedia
n. That branch of engineering science which treats of the motion of liquids, the laws by which it is regulated, and the application of these principles to machinery, marine engineering, etc.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. study of the mechanics of fluids
Word Usage
"So the hydraulics are the key thing to look at here."