English
hydrodilatation
From hydro- + dilatation.
Formed from hydro- + dilatation
Proto-Indo-European *wed- ‘water’
Proto-Indo-European *wódr̥ ‘water’
Proto-Hellenic *údōr ‘water’
Ancient Greek ῡ̆̔́δωρ ‘water’
English hydro-
Latin lātus ‘wide’
Latin dīlātō ‘to spread out, extend, dilate’
Late Latin dīlātātio ‘extending, enlarging’
Old French dilatation ‘dilation’
English dilatation
Today it means
noun The injection of a solution into a joint in order to stretch its capsule
Language periods are conventional ranges, not dates for this word.
Etymograph / hydrodilatation