Definition of self-energy in English:

self-energy

Pronunciation /ˌsɛlfˈɛnədʒi/

noun

  • 1Innate energy, vigour, or power.

  • 2Physics
    The energy possessed by a particle, current, etc., in isolation from other particles and fields; specifically (in quantum field theory) the energy arising from the interaction of a particle with its own field.

Origin

Early 18th century. From self- + energy.