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internal energy

noun, Thermodynamics
1.
a function of thermodynamic variables, as temperature, that represents the internal state of a system that is due to the energies of the molecular constituents of the system. The change in internal energy during a process is equal to the net heat entering the system minus the net work done by the system. Symbol: U.
Origin of internal energy
1885-1890
1885-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for internal energy
Historical Examples
  • Is it the light, or in the stores of internal energy possessed by the molecule?

  • There was a thought that a mere circumstance or necessity could determine the exercise of an internal energy.

    The Gospel of St. John Frederick Denison Maurice
  • Vigor, which may be defined as internal energy, must not be confused with size.

    The Pears of New York U. P. Hedrick
  • The autonomous activity of pulsating leaflet of Desmodium gyrans comes to a stop under depletion of internal energy.

    Life Movements in Plants Sir Jagadis Chunder Bose
  • Electrons differ in their opinions as to whether man will succeed in drawing upon this internal energy of the atom.

    Autobiography of an Electron Charles R. (Charles Robert) Gibson
  • For these cliffs have risenso the geologists tell usthrough their own internal energy to their present proud position.

    The Heart of Nature Francis Younghusband
British Dictionary definitions for internal energy

internal energy

noun
1.
the thermodynamic property of a system that changes by an amount equal to the work done on the system when it suffers an adiabatic change. It is the sum of the kinetic and potential energies of its constituent atoms, molecules, etc U, E
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Value for internal

8
11
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