|kän.trə+...- noun
Etymology: contra- + rotating
: one of a pair of propellers (as on a ship or airplane) mounted on concentric shafts, having a common drive, and turning in opposite directions to reduce the torque reaction
|kän.trə+...- noun
Etymology: contra- + rotating
: one of a pair of propellers (as on a ship or airplane) mounted on concentric shafts, having a common drive, and turning in opposite directions to reduce the torque reaction
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012