nanosecond

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noun nano·sec·ond \-ˌse-kənd, -kənt\

Definition of nanosecond

  1. 1 :  one billionth of a second

  2. 2 :  a very brief moment

Examples of nanosecond in a sentence

  1. It happens in less than a nanosecond.

  2. <a nanosecond was about all that it took her to accept his marriage proposal>

Did You Know?

The nonserious use of nanosecond is probably much more common than the proper technical use. In measurement terms such as nanosecond, nanogram, and nanometer, nano- means "billionth;" in other kinds of words, its meaning isn't quite so precise. In computers, the speed of reading and writing to random access memory (RAM) is measured in nanoseconds. By comparison, the speed of reading or writing to a hard drive or a CD-ROM player, or for information to travel over the Internet, is measured in milliseconds (thousandths of a second), which are a million times longer than nanoseconds.

Origin and Etymology of nanosecond

International Scientific Vocabulary


First Known Use: 1959


NANOSECOND Defined for English Language Learners

nanosecond

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noun nano·sec·ond \-ˌse-kənd, -kənt\

Definition of nanosecond for English Language Learners

  • : one billionth of a second

  • : a very short time


Medical Dictionary

nanosecond

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noun nano·sec·ond \-ˌsek-ənd, -ənt\

Medical Definition of nanosecond

  1. :  one billionth of a second—abbreviation ns, nsec


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