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Denotation vs. Connotation

high-energy physics

[hahy-en-er-jee] /ˈhaɪˈɛn ər dʒi/
noun
1.
the branch of particle physics that deals with the collisions of particles accelerated to such high energies that new elementary particles are created by the collisions.
Origin of high-energy physics
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for high-energy physics

high-energy physics

noun
1.
another name for particle physics
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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Difficulty index for high-energy physics

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Word Value for high

11
10
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