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spallation

[spaw-ley-shuh n]
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noun Physics.
  1. a nuclear reaction in which several nucleons are released from the nucleus of an atom.
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Origin of spallation

First recorded in 1945–50; spall + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for spallation

Historical Examples

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

    LRL Accelerators

    Lawrence Radiation Laboratory


British Dictionary definitions for spallation

spallation

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
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Word Origin

C20: from spall + -ation
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

spallation in Medicine

spallation

(spô-lāshən)
n.
  1. A nuclear reaction in which nuclei are bombarded by high-energy particles, causing the liberation of protons and alpha particles.
  2. Fragmentation.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.