+A piston is a sliding component that fits snugly inside a [Cylinder](/wiki/cylinder), forming a movable gas-tight seal. It translates the expansion of gas into linear motion, or conversely, transfers external force to compress fluids. This crucial element is at the heart of many [Engine](/wiki/engine)s and pumps, driving their fundamental operations.
+## See also
+- [Engine](/wiki/engine)
+- [Pump](/wiki/pump)
+- [Crankshaft](/wiki/crankshaft)
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