9 letters · 18 points in Scrabble
adjective moved or operated or effected by liquid (water or oil)
adjective of or relating to the study of hydraulics
originFrom 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”).
Etymology from Wiktionary, CC BY-SA 3.0