[ spaw-ley-shuhn ]
/ spɔˈleɪ ʃən /
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a nuclear reaction in which several nucleons are released from the nucleus of an atom.
QUIZ YOURSELF ON PARENTHESES AND BRACKETS APLENTY!
Set some time apart to test your bracket symbol knowledge, and see if you can keep your parentheses, squares, curlies, and angles all straight!
Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket”?
First appeared around 1750, and is related to the French word “braguette” for the name of codpiece armor.
First appeared in 1610, based on the French word “baguette” for the long loaf of bread.
First appeared in 1555, and is related to the French word “raquette” for a netted bat.TAKE THE QUIZ TO FIND OUT
Words nearby spallation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for spallation
Two general types of reactions, known as spallation and fragmentation, are distinguished.LRL Accelerators|Lawrence Radiation Laboratory
British Dictionary definitions for spallation
/ (spəˈleɪʃən) /
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
Word Origin for spallation
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
Medical definitions for spallation
[ spô-lā′shən ]
A nuclear reaction in which nuclei are bombarded by high-energy particles, causing the liberation of protons and alpha particles.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.