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chronon
chron·on [ krṓ nòn ] (plural chron·ons)


noun 
Definition:
 
very small unit of time: a unit of time equal to the time that it would take for a photon to cross the diameter of an electron, taken as approximately 10-24 seconds
[<chrono- + -on1]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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