Hydraulic
来自Big Physics
early 17th century: via Latin from Greek hudraulikos, from hudro- ‘water’ + aulos ‘pipe’.
wiktionary
From French hydraulique, from Latin hydraulicus, from Ancient Greek ὑδραυλικός(hudraulikós, “of a water organ”), from ὕδραυλις(húdraulis, “water organ”), from ὕδωρ(húdōr, “water”) + αὐλός(aulós, “pipe”) [1].
etymonline
hydraulic (adj.)
"pertaining to fluids in motion," c. 1600, from French hydraulique, from Latin hydraulicus, from Greek hydraulikos (organon) "water organ," the name of a musical instrument invented by the Egyptian Ctesibius, from hydr-, stem of hydor "water" (from suffixed form of PIE root *wed- (1) "water; wet") + aulos "musical instrument, hollow tube, pipe" (see alveolus). Extended by the Romans to other water engines.
