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nanosecond

[nan-uh-sek-uh nd, ney-nuh-] /ˈnæn əˌsɛk ənd, ˈneɪ nə-/
noun
1.
one billionth of a second.
Abbreviation: ns, nsec.
Origin
1955-1960
1955-60; nano- + second2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nanoseconds

nanosecond

/ˈnænəʊˌsɛkənd/
noun
1.
one thousand-millionth of a second ns
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 nanoseconds

nanosecond

n.

1959, from nano- + second (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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nanoseconds in Science
nanosecond
  (nān'ə-sěk'ənd)   
One billionth (10-9) of a second.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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nanoseconds in Culture
nanosecond [(nan-uh-sek-uhnd)]

A billionth of a second.

Note: The term is often used to refer to a very short time: “He missed having an accident by nanoseconds.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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