Try Our Apps


Gobble up these 8 terms for eating


[nan-uh-sek-uh nd, ney-nuh-] /ˈnæn əˌsɛk ənd, ˈneɪ nə-/
one billionth of a second.
Abbreviation: ns, nsec.
Origin of nanosecond
1955-60; nano- + second2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for nanosecond
Contemporary Examples
British Dictionary definitions for nanosecond


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
Cite This Source
Word Origin and History for nanosecond

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

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
nanosecond in Science
One billionth (10-9) of a second.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
nanosecond 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.
Cite This Source
nanosecond in Technology

(ns) 10^-9 seconds; one thousand millionth part of a second.
This is the unit in which the fundamental logical operations of modern digital circuits are typically measured. For example, a microprocessor with a clock frequency of 100 megahertz will have a 10 nanosecond clock period.

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

Word of the Day

Word Value for nanosecond

Scrabble Words With Friends

Nearby words for nanosecond