microsecond

American  

[mahy-kruh-sek-uhnd] / ˈmaɪ krəˌsɛk ənd /

noun

1. a unit of time equal to one millionth of a second. μsec

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microsecond British  

/ ˈmaɪkrəʊˌsɛkənd /

noun

1. μs. one millionth of a second

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microsecond Scientific  

/ mī′krō-sĕk′ənd /

1. A unit of time equal to one millionth (10 ^{- 6}) of a second.

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Etymology

Origin of microsecond

First recorded in 1905–10; micro- + second ²

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Example Sentences

See Examples For:

microsecond

In practice some firms access it first, and transmit it to traders who are able to exploit microsecond advantages over others.

From The Wall Street Journal ● Jul. 8, 2026

For example, 5G communication systems require timing accuracy within a tenth of a microsecond.

From Science Daily ● Dec. 30, 2025

Then, he recalled, "they would play the points" in endless takes -- with or without the ball -- repeating choreography timed "down to the microsecond".

From Barron's ● Dec. 23, 2025

They’re executing millions of trades on microsecond timescales using signals derived from petabytes of data.

From MarketWatch ● Nov. 15, 2025

Mr. Flux pressed the shutter button, and a sun-bright flash obliterated shadows for a microsecond.

From "The Last Last-Day-of-Summer" by Lamar Giles

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Related Words

• blink of an eye
• millisecond
• nanosecond

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