Dictionary

nanosecond

noun nano·sec·ond \-ˌse-kənd, -kənt\

: 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

  1. It happens in less than a nanosecond.
  2. <a nanosecond was about all that it took her to accept his marriage proposal>

Origin of NANOSECOND

International Scientific Vocabulary
First Known Use: 1959

nanosecond

noun nano·sec·ond \-ˌsek-ənd, -ənt\   (Medical Dictionary)

Medical Definition of NANOSECOND

:  one billionth of a second—abbreviation ns, nsec

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