hydraulic

hy|drau|lic /haɪdr'ɒlɪk, AM -dr'ɔːl-/
[ADJ] ADJ n
Hydraulic equipment or machinery involves or is operated by a fluid that is under pressure, such as water or oil.
The boat has no fewer than five hydraulic pumps.
hydraulically [ADV] ADV with v
...hydraulically operated pistons for raising and lowering the blade.

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