Definition of internal energy in English:

internal energy

Line breaks: in|tern¦al en¦ergy

noun

[mass 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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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody