Definition of "nanosecond" []

• One billionth (10-9) of a second. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Dan, with all due respect, everyone knows a nanosecond is that magical time between when the locked cardoor leaves your fingertips and the instant your brain realizes that your keys are still in the switch ..."
• "** Though a nanosecond has a technical definition as a millionth of a second, PT has always been partial to the folk definition: A nanosecond is the length of time between when the light in front of you goes green and the car behind you honks its horn."
• "Half a nanosecond is my guess as to what would be a truthful answer."