hydrauliccircuit
nounUK /haɪˈdrɒlɪk ˈsɜːkɪt/
US /haɪˈdrɔːlɪk ˈsɜːrkɪt/
A hydraulic circuit is a path that oil or water takes to push and move things.
The digger's arm moves because oil flows through its hydraulic circuit.
OTHER MEANINGS
2. A closed loop of pipes and parts that carries liquid under pressure to do work.
Engineers checked the hydraulic circuit for leaks before starting the machine.
3. The set of connected hydraulic components in a machine, such as a tractor or airplane.
A blocked filter can stop the whole hydraulic circuit from working.
4. A diagram or plan showing how liquid flows through connected parts.
The manual includes a hydraulic circuit that shows where each hose connects.