piston
UK: ˈpɪstən | US: ˈpɪstən
n. a component of engines or pumps that moves back and forth within a cylinder to transfer force or motion.
piston = pist<pound, push> + on<noun suffix>
- pist<pound, push>: Derived from Old French pister (to pound or crush), ultimately from Latin pistare (to pound), related to pinsere (to beat or stamp).
- on<noun suffix>: A common suffix in French-derived nouns indicating an object or tool (e.g., button, carton).
Etymology Origin:
The word piston entered English in the early 18th century from French, where it originally referred to a plunger or stamping tool. Its Latin root pistare reflects the mechanical action of pounding or pushing, which aligns with the piston's function in engines—repeatedly compressing or displacing fluids or gases. The suffix -on solidifies its identity as a tangible mechanical component.
The engine's piston moves rapidly to convert fuel into motion.
A damaged piston can cause severe engine failure.
The mechanic replaced the worn-out piston rings.
Steam engines rely on pistons to drive the locomotive.
The piston's smooth operation is critical for efficiency.