Phrase guide

nuclear fallout

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

Residual radioactive material in the upper atmosphere which settles down to Earth over a protracted period; typically ash which has been propelled upwards by a nuclear explosion or disaster, sometimes mixed with rain or snow.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An event in which this occurs, generally perceived as an ecological disaster due to the distribution of irradiated material over a much larger area than the zone directly affected by the original event.

Definition source: English Wiktionary via Wiktextract

Usage: countable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

In reference to such material falling out of the sky.

Across languages

Translations

38 source translations are retained for this English entry.

  • Arabic: تَهَاطُل نَوَوِيّ (tahāṭul nawawiyy) — radioactive material in the atmosphere which settles down to Earth
  • Armenian: ճառագայթաակտիվ նստվածք (čaṙagaytʻaaktiv nstvackʻ) — radioactive material in the atmosphere which settles down to Earth
  • Basque: euri erradioaktibo — radioactive material in the atmosphere which settles down to Earth
  • Belarusian: радыёакты́ўны аса́дак (radyjoaktýwny asádak) — radioactive material in the atmosphere which settles down to Earth
  • Catalan: pluja radioactiva — radioactive material in the atmosphere which settles down to Earth
  • Chinese Mandarin: 放射性落下灰 (fàngshèxìng luò xià huī) — radioactive material in the atmosphere which settles down to Earth
  • Czech: radioaktivní spad — radioactive material in the atmosphere which settles down to Earth
  • Danish: radioaktivt nedfald — radioactive material in the atmosphere which settles down to Earth
  • Dutch: fall-out — radioactive material in the atmosphere which settles down to Earth
  • Faroese: geislavirkið avfall — radioactive material in the atmosphere which settles down to Earth
  • Finnish: radioaktiivinen laskeuma — radioactive material in the atmosphere which settles down to Earth
  • French: retombée radioactive — radioactive material in the atmosphere which settles down to Earth
  • German: radioaktiver Niederschlag — radioactive material in the atmosphere which settles down to Earth
  • Greek: ραδιενεργό νέφος (radienergó néfos) — radioactive material in the atmosphere which settles down to Earth
  • Hebrew: נשורת גרעינית — radioactive material in the atmosphere which settles down to Earth
  • Hungarian: radioaktív hulladék — radioactive material in the atmosphere which settles down to Earth
  • Hungarian: radioaktív szennyeződés — radioactive material in the atmosphere which settles down to Earth
  • Hungarian: radioaktív csapadék — radioactive material in the atmosphere which settles down to Earth
  • Italian: fallout nucleare — radioactive material in the atmosphere which settles down to Earth
  • Japanese: 放射性降下物 (hōsha sei kōka butsu) — radioactive material in the atmosphere which settles down to Earth
  • Japanese: 死の灰 (shinohai) — radioactive material in the atmosphere which settles down to Earth
  • Polish: opad promieniotwórczy — radioactive material in the atmosphere which settles down to Earth
  • Portuguese: chuva radioativa — radioactive material in the atmosphere which settles down to Earth
  • Portuguese: chuva negra — radioactive material in the atmosphere which settles down to Earth
  • Romanian: precipitație radioactivă — radioactive material in the atmosphere which settles down to Earth
  • Russian: радиоакти́вный оса́док (radioaktívnyj osádok) — radioactive material in the atmosphere which settles down to Earth
  • Sardinian: aba proja radioativa — radioactive material in the atmosphere which settles down to Earth
  • Serbo-Croatian: nuklearne padaline — radioactive material in the atmosphere which settles down to Earth
  • Serbo-Croatian: radioaktivne padaline — radioactive material in the atmosphere which settles down to Earth
  • Serbo-Croatian: нуклеарне падавине — radioactive material in the atmosphere which settles down to Earth
  • Serbo-Croatian: nuklearne padavine — radioactive material in the atmosphere which settles down to Earth
  • Slovak: rádioaktívny spad — radioactive material in the atmosphere which settles down to Earth
  • Spanish: lluvia radiactiva — radioactive material in the atmosphere which settles down to Earth
  • Swedish: radioaktivt nedfall — radioactive material in the atmosphere which settles down to Earth
  • Thai: ฝุ่นรังสีนิวเคลียร์ (fùn rangsĕe niwklia) — radioactive material in the atmosphere which settles down to Earth
  • Turkish: radyoaktif bulut — radioactive material in the atmosphere which settles down to Earth
  • Ukrainian: радіоакти́вний оса́д (radioaktývnyj osád) — radioactive material in the atmosphere which settles down to Earth
  • Welsh: alldafliad ymbelydrol — radioactive material in the atmosphere which settles down to Earth