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Definition of Perpetual Motion in English :

Define Perpetual Motion in English

Perpetual Motion meaning in English

Meaning of Perpetual Motion in English

Pronunciation of Perpetual Motion in English

Perpetual Motion pronunciation in English

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Perpetual Motion

see synonyms of perpetual motion

Noun

1. perpetual motion

motion that continues indefinitely without any external source of energy; impossible in practice because of friction

WordNet Lexical Database for English. Princeton University. 2010.

Perpetual Motion

see synonyms of perpetual motion
noun
1. Also called: perpetual motion of the first kind
motion of a hypothetical mechanism that continues indefinitely without any external source of energy. It is impossible in practice because of friction
2. Also called: perpetual motion of the second kind
motion of a hypothetical mechanism that derives its energy from a source at a lower temperature. It is impossible in practice because of the second law of thermodynamics

Collins English Dictionary. Copyright © HarperCollins Publishers

Perpetual Motion

see synonyms of perpetual motion
the motion of a hypothetical device which, once set in motion, would operate indefinitely by creating its own energy in excess of that dissipated

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Perpetual Motion

see synonyms of perpetual motion
n.
The hypothetical continuous operation of an isolated mechanical device or other closed system without a sustaining energy source.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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