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hyperon

[hahy-puh-ron]
noun Physics.
  1. any baryon with strangeness other than zero, especially one with a relatively long lifetime.
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Origin of hyperon

First recorded in 1950–55; hyper- + -on1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hyperon

hyperon

noun
  1. physics any baryon that is not a nucleon
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Word Origin

C20: from hyper- + -on
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

hyperon in Science

hyperon

[hīpə-rŏn′]
  1. Any of various baryons, other than the proton and neutron, that are unstable. The lambda particle is such an example. Hyperons are heavier than protons and neutrons, and they have nonzero strangeness.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.