microsecond

noun

mi·​cro·​sec·​ond ˈmī-krō-ˌse-kənd 

-kənt

: one millionth of a second

Examples of microsecond in a Sentence

Recent Examples on the Web

This type of basic system can react to inputs in microseconds. — Lee-Lean Shu, Forbes.com, 11 June 2026

But this seething primordial soup—the stuff of future galaxies, stars, planets and people—only lasted a few microseconds. — Joseph Howlett, Scientific American, 6 Feb. 2026

Atom Power’s digital breaker eliminates this risk, by cutting the power in nanoseconds or microseconds. — Charlotte Observer, 11 Mar. 2026

Super frugal use of memory bandwidth, caching exactly what is needed & squeezing microseconds out of everything are needed to maintain the frame rate. — Jack Ewing, New York Times, 2 June 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1906, in the meaning defined above

Rhymes for microsecond

• femtosecond
• millisecond
• nanosecond
• picosecond
• beckoned
• reckoned
• second
• seconde

Kids Definition

microsecond

noun

mi·​cro·​sec·​ond ˌmī-krō-ˈsek-ənd 

-ənt

: one millionth of a second

Medical Definition

microsecond

noun

mi·​cro·​sec·​ond ˈmī-krō-ˌsek-ənd, -ənt 

: one millionth of a second