Try Our Apps


Avoid these words. Seriously.

internal energy

noun, Thermodynamics.
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
First recorded in 1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for internal energy
Historical Examples
  • Vigor, which may be defined as internal energy, must not be confused with size.

    The Pears of New York U. P. Hedrick
  • 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
  • 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
  • Is it the light, or in the stores of internal energy possessed by the molecule?

  • For these cliffs have risenso the geologists tell usthrough their own internal energy to their present proud position.

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

internal energy

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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of the Day

Nearby words for internal energy

Word Value for internal

Scrabble Words With Friends