English

hydrokinetics

From hydro- + kinetics.

Proto-Indo-European *wed- ‘water’

Proto-Indo-European *wódr̥ ‘water’

Proto-Hellenic *údōr ‘water’

Ancient Greek ῡ̆̔́δωρ ‘water’

Proto-Indo-European *keyh₂- ‘to start to move’

Ancient Greek κῑνέω ‘I move’

Ancient Greek κῑ́νησῐς ‘motion’

Ancient Greek κινητικός ‘kinetic’

Today it means

noun The branch of physics concerned with the movement of fluids

Language periods are conventional ranges, not dates for this word.

Etymograph / hydrokinetics