Definition, Meaning & Synonyms

perpetual-motion

noun

/pərˈpɛtʃuəl ˈmoʊʃən/

Definition

Perpetual motion refers to the motion of a machine or device that, once in motion, continues to move indefinitely without requiring any external energy source.

Examples

The idea of a perpetual-motion machine has fascinated inventors for centuries.
Many scientists have proven that perpetual motion is not feasible due to energy conservation laws.
In fiction, characters sometimes devise perpetual-motion devices that contradict physical principles.

Meaning

The concept of perpetual motion is based on creating a machine that can operate endlessly without energy loss, which is impossible according to the laws of thermodynamics.