Phrase guide

fusion reactor

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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No pronunciation record was provided for this word.

1

noun

Meaning 1

a thermonuclear reactor that relies on the controlled fusion of light elements into heavier elements, with the attendant release of huge amounts of energy. In practice, satisfactory results have not yet been achieved.

Definition source: English Wiktionary via Wiktextract

Qualifier: theoretically

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a nuclear reactor that uses controlled nuclear fusion to generate energy

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: thermonuclear reactor

Antonyms: none provided

Broader terms: nuclear reactor, reactor

History

Etymology

No etymology was provided for this word.

Across languages

Translations

6 source translations are retained for this English entry.

  • Finnish: fuusioreaktori — type of thermonuclear reactor
  • German: Fusionsreaktor — type of thermonuclear reactor
  • Hungarian: fúziós reaktor — type of thermonuclear reactor
  • Polish: reaktor termojądrowy — type of thermonuclear reactor
  • Romanian: reactor de fuziune — type of thermonuclear reactor
  • Russian: термоя́дерный реа́ктор (termojádernyj reáktor) — type of thermonuclear reactor