hydraulicus
From LSJ
ὡς μήτε τὰ γενόμενα ἐξ ἀνθρώπων τῷ χρόνῳ ἐξίτηλα γένηται → in order that so the memory of the past may not be blotted out from among men by time
Latin > English (Lewis & Short)
hydraulĭcus: a, um, adj., = ὑδραυλικός>,
I of or belonging to the water-organ, hydraulic: machinae, water-organs, Vitr. 9, 9; 10, 13; called also organa, Plin. 7, 37, 38, § 125; Suet. Ner. 41.