hydropneumatization

[ hahy-druh-noo-muh-tuh-zey-shuh n, -nyoo- ]
/ ˌhaɪ drəˌnu mə təˈzeɪ ʃən, -ˌnyu- /

noun

utilization of air pressure in the housing of a water turbine to keep the level of water that has been used from rising to interfere with the rotor blades.

Origin of hydropneumatization