Phrase guide

nuclear fusion

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The combining of the nuclei of atoms to form the nuclei of larger ones, with a resulting release of large quantities of energy; the process that makes the sun shine, and hydrogen bombs explode.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Qualifier: nuclear physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fusion, nuclear fusion reaction

Antonyms: none provided

Broader terms: nuclear reaction

Narrower terms: cold fusion, thermonuclear reaction

History

Etymology

No etymology was provided for this word.

Across languages

Translations

35 source translations are retained for this English entry.

  • Arabic: اِنْدِمَاج نَوَوِيّ (indimāj nawawiyy) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Aragonese: fusión nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Aragonese: fusión nucleyar — the combining of nuclei of small atoms to form nuclei of larger ones
  • Asturian: fusión nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Basque: fusio nuklear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Catalan: fusió nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Chinese Mandarin: 核聚變 /核聚变 (héjùbiàn) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Chinese Mandarin: 核融合 (hérónghé) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Dutch: kernfusie — the combining of nuclei of small atoms to form nuclei of larger ones
  • Finnish: ydinfuusio — the combining of nuclei of small atoms to form nuclei of larger ones
  • French: fusion nucléaire — the combining of nuclei of small atoms to form nuclei of larger ones
  • Galician: fusión nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • German: Kernfusion — the combining of nuclei of small atoms to form nuclei of larger ones
  • Hebrew: היתוך גרעיני (hitúkh gar'iní) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Hindi: नाभिकीय संलयन (nābhikīya sanlyan) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Hungarian: magfúzió — the combining of nuclei of small atoms to form nuclei of larger ones
  • Hungarian: atommagfúzió — the combining of nuclei of small atoms to form nuclei of larger ones
  • Icelandic: kjarnasamruni — the combining of nuclei of small atoms to form nuclei of larger ones
  • Icelandic: samruni — the combining of nuclei of small atoms to form nuclei of larger ones
  • Italian: fusione nucleare — the combining of nuclei of small atoms to form nuclei of larger ones
  • Japanese: 核融合 (kakuyūgō) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Macedonian: ја́дрено соедину́вање (jádreno soedinúvanje) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Macedonian: нуклеа́рна фу́зија (nukleárna fúzija) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Occitan: fusion nucleara — the combining of nuclei of small atoms to form nuclei of larger ones
  • Polish: fuzja jądrowa — the combining of nuclei of small atoms to form nuclei of larger ones
  • Portuguese: fusão nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Romanian: fuziune nucleară — the combining of nuclei of small atoms to form nuclei of larger ones
  • Russian: ядерная реа́кция си́нтеза (jádernaja reákcija síntɛza) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Russian: термоя́дерная реа́кция (termojádernaja reákcija) — the combining of nuclei of small atoms to form nuclei of larger ones
  • Serbo-Croatian: нуклеарна фузија — the combining of nuclei of small atoms to form nuclei of larger ones
  • Serbo-Croatian: nuklearna fuzija — the combining of nuclei of small atoms to form nuclei of larger ones
  • Slovene: jêdrsko zlívanje — the combining of nuclei of small atoms to form nuclei of larger ones
  • Slovene: jedrska fuzija — the combining of nuclei of small atoms to form nuclei of larger ones
  • Spanish: fusión nuclear — the combining of nuclei of small atoms to form nuclei of larger ones
  • Tagalog: sapisan — the combining of nuclei of small atoms to form nuclei of larger ones