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spallation

[ spaw-ley-shuhn ]

noun

, Physics.
  1. a nuclear reaction in which several nucleons are released from the nucleus of an atom.

spallation

/ spəˈleɪʃən /

noun

  1. physics a type of nuclear reaction in which a photon or particle hits a nucleus and causes it to emit many other particles or photons
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of spallation1

First recorded in 1945–50; spall + -ation
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Word History and Origins

Origin of spallation1

C20: from spall + -ation
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Example Sentences

Two general types of reactions, known as spallation and fragmentation, are distinguished.

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