# hydraulics

/haɪˈdɹɔɫɪks/ (US) · /haɪdɹˈɔːlɪks/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/hydraulics
Updated: 2026-05-20

## Definition

the use of liquid pressure to move or lift heavy things. It is the science behind how machines like car brakes or lifts work.

For teachers: the branch of physics concerned with the mechanical properties of liquids, particularly the transmission of force through fluid pressure. Often refers to the practical application of these principles in engineering and machinery.

## Examples

- The heavy lift requires hydraulics to move the platform.
- Modern excavators rely on sophisticated hydraulics to provide the immense force needed for digging.
- The bridge's maintenance schedule includes regular inspections of the hydraulics to ensure the massive steel gates can open and close safely during high tide.

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