Simple Definition of nanosecond
: one billionth of a second
: a very short time
Full Definition of nanosecond
1 : one billionth of a second
2 : a very brief moment
Examples of nanosecond
It happens in less than a nanosecond.
<a nanosecond was about all that it took her to accept his marriage proposal>
Origin of nanosecond
International Scientific Vocabulary
First Known Use: 1959
Medical Definition of nanosecond
: one billionth of a second—abbreviation ns, nsec
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