An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Operated, moved, or employing water or other liquids in motion.

From Gk. hydraulikos organon "water organ," from → hydro- "water" + aulos "musical instrument, hollow tube."

A device, which uses the energy of water flowing by gravity intermittently through a pipe to force a small portion of the water to a height greater than that of the source.

→ hydraulic; → ram.