Definition of internal energy in English:

internal energy

Syllabification: in·ter·nal en·er·gy

noun

Physics
The energy in a system arising from the relative positions and interactions of its parts.
More example sentences
  • Thermodynamics is the study of the inter-relation between heat, work and internal energy of a system.
  • If all you know of this system is that its internal energy is E and its volume is V, then clearly there are many, many different states the system could be in.
  • Atoms give up excess internal energy by giving off photons as electrons return to lower energy orbits.

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