Definition of spallation in English:

spallation

Line breaks: spal|la¦tion
Pronunciation: /spɔːˈleɪʃ(ə)n
 
/

noun

[mass noun]
1 Physics The break-up of a bombarded nucleus into several parts.
2 Geology Separation of fragments from the surface of a rock, especially by interaction with a compression wave.

Definition of spallation in:

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Pronunciation: ɪnˈvɛnəm
verb
put poison on or into; make poisonous