yocto-


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yocto-

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One septillionth (10-24): yoctosecond.

[Alteration of octo- (from its representing the eighth power of a thousandth).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.