Piston

usgb/ˈpɪstən/
noun

A part in engine which moves up and down inside a cylinder and helps the engine work.

The piston in the car engine needs to be replaced.
Visual representation of "piston" - A part in engine which moves up and down inside a cylinder and helps the engine work.

Often appears as...

  • piston engine
  • piston cylinder

Usage tips

Technical

Definition 1 of 3
Visual representation of "piston"
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Engine Movement

Remember, the piston's movement is vital for converting fuel into mechanical energy.

Illustration for Engine Movement
The repeated movement of the pistons powers the car forward.
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Wear and Tear

Pistons are subject to significant wear due to constant use and may need replacement or repair.

Illustration for Wear and Tear
After 100,000 miles, it's common to check the engine's pistons for wear.
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Cylinder Pairing

A piston always works within a cylinder, and they are mentioned together often.

Illustration for Cylinder Pairing
The mechanic examined the piston and cylinder for signs of damage.
Visual representation of the word "Piston"

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