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pi meson

noun

Physics.

  1. pion.

pi meson

noun

  1. another name for pion

“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

pi meson

  1. See pion

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Word History and Origins

Origin of pi meson1

First recorded in 1945–50
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Example Sentences

Examples have not been reviewed.

About one-thirtieth of the times that a pi meson hit a deuterium nucleus, out came the eta meson, which decays into three pions.

The mass of the quick-vanishing pi meson has been measured accurately, as well as its "spin," which is something like rotation.

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