exahertz
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Related to exahertz: PHz
ex·a·hertz
(ĕk′sə-hûrts′)n. Abbr. EHz
One quintillion (1018) hertz.
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.
exahertz
(ˌɛksəˈhɜːts)n
(Units) a very large unit of frequency equal to one quintillion hertz
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014