thermonuclear.
Of, or relating to the fusion of atomic nuclei at high temperatures.
Meaning & usage
Of, or relating to the fusion of atomic nuclei at high temperatures.
Of, or relating to the use of atomic weapons based on such fusion, especially as distinguished from those based on fission.
Where this word comes from
Etymology tree Proto-Indo-European *gʷʰer- Proto-Indo-European *-mos Proto-Indo-European *gʷʰermos Proto-Hellenic *kʷʰermós Ancient Greek θερμός (thermós)der. English thermo- English nuclear English thermonuclear From thermo- + nuclear.
A thermonuclear weapon.
China detonated her first thermonuclear in June 1967.
Where this word comes from
Etymology tree Proto-Indo-European *gʷʰer- Proto-Indo-European *-mos Proto-Indo-European *gʷʰermos Proto-Hellenic *kʷʰermós Ancient Greek θερμός (thermós)der. English thermo- English nuclear English thermonuclear From thermo- + nuclear.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.