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eta-c particle

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eta-c meson

[ey-tuh-see, ee-tuh-]
–noun Physics.
a neutral meson having a mass 5832 times that of the electron and a mean lifetime of approximately 3.1 × 10-22 seconds.
Also called eta-c particle.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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e·ta-c particle   (ā'tə-sē', ē'tə-)   
n.  An electrically neutral meson having a mass 5,832 times that of the electron and a mean lifetime of approximately 3.1 × 10-22 seconds. See Table at subatomic particle.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
eta-c particle   (ā'tə-sē', ē'tə-)  Pronunciation Key 
An electrically neutral meson having a mass 5,832 times that of the electron and a mean lifetime of approximately 3.1 × 10-22 seconds. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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