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[mahy-kruh-sek-uh nd] /ˈmaɪ krəˌsɛk ənd/
a unit of time equal to one millionth of a second. Symbol: μsec.
Origin of microsecond
1905-10; micro- + second2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for microsecond
  • The body is always trying to restore health every microsecond of our lives.
  • When you're dancing with an enormous machine, it's even more important to get the timing correct, down to the microsecond.
  • As the early universe went along doubling every microsecond, the stuff in it doubled, too-out of nowhere.
  • In contrast, you can look at a plot in a microsecond, and quickly scan between interesting features.
  • After about a microsecond, it had cooled enough for protons and neutrons to form.
  • The neutrinos are produced in ten microsecond bursts from a proton beam.
British Dictionary definitions for microsecond


one millionth of a second μs
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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Word Origin and History for microsecond

1906, from micro- + second (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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microsecond in Science
A unit of time equal to one millionth (10-6) of a second.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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microsecond in Technology

One millionth (10^-6) of a second.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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