“+ adjective
Etymology: International Scientific Vocabulary hydr- + pneumatic
: of, relating to, or operating by means of both water and air or other gas
a hydropneumatic elevator
“+ adjective
Etymology: International Scientific Vocabulary hydr- + pneumatic
: of, relating to, or operating by means of both water and air or other gas
a hydropneumatic elevator
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012