Standard Lemma guide

spallation

noun · 3 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /spəˈleɪʃ(ə)n/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US: /spɔːleɪʃən/
  • US: /spɑːleɪʃən/

1

noun

Meaning 1

Fragmentation due to stress or impact, or any pattern of surface damage created thereby.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: materials science

Topics: engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: spalling, spall

Antonyms: none provided

2

noun

Meaning 2

A nuclear reaction in which a nucleus fragments into many nucleons.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: nuclear physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles

Definition source: Princeton WordNet 3.0

Examples

  • some astronomers believe that the solar system was formed by spallation when the sun was a very young star

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: nuclear reaction

History

Etymology

From spall + -ation.

Across languages

Translations

24 source translations are retained for this English entry.

  • Finnish: hajoaminen — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • French: spallation — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Italian: spallazione — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Norwegian: spallasjon — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Polish: spalacja — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Polish: kruszenie — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Russian: скалывание (skalyvanije) — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Spanish: espalación — physics: nuclear reaction in which a nucleus fragments into many nucleons
  • Finnish: pirstaloituminen — fragmentation due to stress or impact
  • Finnish: sirpaloituminen — fragmentation due to stress or impact
  • Finnish: hajoaminen — fragmentation due to stress or impact
  • French: éclatement — fragmentation due to stress or impact
  • French: fragmentation — fragmentation due to stress or impact
  • French: pulvérisation — fragmentation due to stress or impact
  • French: explosion — fragmentation due to stress or impact
  • French: atomisation — fragmentation due to stress or impact
  • Polish: rozbicie — fragmentation due to stress or impact
  • Russian: скалывание (skalyvanije) — fragmentation due to stress or impact
  • Russian: отслаивание (otslaivanije) — fragmentation due to stress or impact
  • Spanish: estallido — fragmentation due to stress or impact
  • Spanish: fragmentación — fragmentation due to stress or impact
  • Spanish: astillado — fragmentation due to stress or impact
  • Spanish: explosión — fragmentation due to stress or impact
  • Spanish: reventón — fragmentation due to stress or impact