microsecond

noun

mi·​cro·​sec·​ond ˈmī-krō-ˌse-kənd How to pronounce microsecond (audio)
-kənt
Synonyms of microsecondnext
: one millionth of a second

Examples of microsecond in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The key was using extremely powerful ultrasound to produce negative pressure of more than 20 megapascals, delivered in short bursts measured in microseconds—but separated by relatively long gaps, between a millisecond and a full second long. IEEE Spectrum, 22 Dec. 2025 When the outage started on Wednesday, some of NIST’s on-campus time distribution systems lapsed before the backup generator kicked in, causing a four-microsecond delay to the atomic clock, Jacobson said. Lauren Penington, Denver Post, 21 Dec. 2025 These extreme physical conditions are maintained for a duration of less than one microsecond. Aman Tripathi, Interesting Engineering, 18 Dec. 2025 For example, 5G needs to be accurate to within a tenth of a microsecond. Keith Cooper, Space.com, 2 Dec. 2025 See All Example Sentences for microsecond

Word History

Etymology

International Scientific Vocabulary

First Known Use

1906, in the meaning defined above

Time Traveler
The first known use of microsecond was in 1906

Browse Nearby Words

Cite this Entry

“Microsecond.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microsecond. Accessed 31 Dec. 2025.

Kids Definition

microsecond

noun
mi·​cro·​sec·​ond ˌmī-krō-ˈsek-ənd How to pronounce microsecond (audio)
-ənt
: one millionth of a second

Medical Definition

microsecond

noun
mi·​cro·​sec·​ond ˈmī-krō-ˌsek-ənd, -ənt How to pronounce microsecond (audio)
: one millionth of a second

More from Merriam-Webster on microsecond

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