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chronon

[kroh-non] /ˈkroʊ nɒn/
noun
1.
a hypothetical unit of time, taken as a ratio between the diameter of the electron and the velocity of light, equivalent to approximately 10− 24 second.
Origin
1975-1980
1975-80; < Greek chron(os) time + -on1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for chronon

chronon

/ˈkrəʊnɒn/
noun
1.
a unit of time equal to the time that a photon would take to traverse the diameter of an electron: about 10–24 seconds
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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12
14
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