zero-point energy

noun

The lowest possible energy of a given quantum mechanical system.

“The existence of a zero-point energy (i.e., the existence of a non-zero lower limit to the energy of a quantum-mechanical system) is a consequence of Heisenberg's uncertainty principle.”

Similar
ground state energyzero-point radiationZPE

Meanings

nounzero-point energy (plural zero-point energies)

plural zero-point energies

  1. quantum mechanicsnatural sciencesThe lowest possible energy of a given quantum mechanical system.

    The existence of a zero-point energy (i.e., the existence of a non-zero lower limit to the energy of a quantum-mechanical system) is a consequence of Heisenberg's uncertainty principle.

    1 more example

    2000, Stephen T. Thornton, Andrew F. Rex, Modern Physics for Scientists and Engineers, Saunders College Publishing, page 205, Our estimate for the zero-point energy of the harmonic oscillator is hbar ω/2.

  2. physicalchemistryThe kinetic energy possessed by (the particle constituents of) a substance at absolute zero temperature.

    The calculated zero-point energies of hydrogen at inner bulk, GB, and FS are within 0.12-0.16eV/H.

    2004, Journal of the Physical Society of Japan, Volume 73, Pages 1-768, Physical Society of Japan, page 441

Synonyms & antonyms

Similar
ground state energyzero-point radiationZPE

Origin

  1. GermanNullpunktenergie
  2. Englishzero-point energy

Calque of German Nullpunktenergie.

Full word history & related roots →

Translations

Finnish nollapiste-energia, nollapiste-energia
  • nollapiste-energialowest possible energy of a quantum mechanical system
  • nollapiste-energiaenergy possessed by an object at a temperature of absolute zero
German Nullpunktenergie, Nullpunktenergie
  • Nullpunktenergielowest possible energy of a quantum mechanical system
  • Nullpunktenergieenergy possessed by an object at a temperature of absolute zero
Italian energia di punto zero, energia di punto zero
  • energia di punto zerolowest possible energy of a quantum mechanical system
  • energia di punto zeroenergy possessed by an object at a temperature of absolute zero
Polish energia punktu zerowego, energia punktu zerowego
  • energia punktu zerowegolowest possible energy of a quantum mechanical system
  • energia punktu zerowegoenergy possessed by an object at a temperature of absolute zero
Romanian energie de punct zero, energie de punct zero
  • energie de punct zerolowest possible energy of a quantum mechanical system
  • energie de punct zeroenergy possessed by an object at a temperature of absolute zero
Cite this entry
APA

zero-point energy. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/zero-point%20energy

MLA

“zero-point energy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/zero-point%20energy. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “zero-point energy,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/zero-point%20energy.

Source: zero-point energy on Wiktionary, CC BY-SA 4.0.