hydropneumatic in English dictionary hydropneumatic Meanings and definitions of "hydropneumatic" Operated by both fluid and air power Being, or pertaining to, a type of automotive suspension system based on a nitrogen springing medium. adjective Operated by both fluid and air power adjective Being, or pertaining to, a type of automotive suspension system based on a nitrogen springing medium. more Grammar and declension of hydropneumatic hydropneumatic ( not comparable) hydropneumatic (not comparable) more Sample sentences with "hydropneumatic" Declension Stem Try again Available translations Catalan Estonian French German Italian Persian Polish Spanish Tamil Authors