perpetuum mobile
The term "perpetuum mobile" originates from Latin, meaning 'perpetual motion', and is used in physics, music, and metaphorical contexts.
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Definition
C1Physics
(technical, academic)A theoretical device that can function indefinitely without external energy input, violating the laws of thermodynamics.
Example
- Scientists agree that a perpetuum mobile cannot exist due to the laws of thermodynamics.
B2Music
(technical, academic)A composition or part of a composition with a continuous, rapid stream of notes, often repeated indefinitely.
Example
- The pianist's fingers flew over the keys in a dazzling perpetuum mobile.
C1General
(metaphorical)A metaphor for any system or process that appears to sustain itself without external support.
Example
- The startup's growth seemed like a perpetuum mobile, thriving without additional investment.
Similar
Terms that have similar or relatively close meanings to "perpetuum mobile":