Standard Lemma guide

microsecond

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

An SI unit of time equal to 10−6 seconds. Symbol: μs

Definition source: English Wiktionary via Wiktextract

Topics: metrology

Examples

  • Holonyms: millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond
  • Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond < nanosecond

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

one millionth (10^-6) of a second; one thousandth of a millisecond

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: time unit, unit of time

History

Etymology

Etymology tree Proto-Indo-European *mey-der.? Ancient Greek μῑκρός (mīkrós) Ancient Greek μῑκρο- (mīkro-)lbor. English micro- English second English microsecond From micro- + second.

Across languages

Translations

22 source translations are retained for this English entry.

  • Chinese Mandarin: 微秒 (wēimiǎo) — unit of time equal to 10−6 seconds
  • Czech: mikrosekunda — unit of time equal to 10−6 seconds
  • Danish: mikrosekund — unit of time equal to 10−6 seconds
  • Dutch: microseconde — unit of time equal to 10−6 seconds
  • Finnish: mikrosekunti — unit of time equal to 10−6 seconds
  • French: microseconde — unit of time equal to 10−6 seconds
  • Greek: μικροδευτερόλεπτο (mikrodefterólepto) — unit of time equal to 10−6 seconds
  • Hebrew: מיקרושניה (mikroshneeya) — unit of time equal to 10−6 seconds
  • Hungarian: mikroszekundum — unit of time equal to 10−6 seconds
  • Icelandic: míkrósekúnda — unit of time equal to 10−6 seconds
  • Italian: microsecondo — unit of time equal to 10−6 seconds
  • Japanese: マイクロ秒 (maikuro byō) — unit of time equal to 10−6 seconds
  • Lithuanian: mikrosekundė — unit of time equal to 10−6 seconds
  • Norwegian Bokmål: mikrosekund — unit of time equal to 10−6 seconds
  • Norwegian Nynorsk: mikrosekund — unit of time equal to 10−6 seconds
  • Portuguese: microssegundo — unit of time equal to 10−6 seconds
  • Russian: микросеку́нда (mikrosekúnda) — unit of time equal to 10−6 seconds
  • Slovak: mikrosekunda — unit of time equal to 10−6 seconds
  • Slovene: mikrosekunda — unit of time equal to 10−6 seconds
  • Spanish: microsegundo — unit of time equal to 10−6 seconds
  • Swedish: mikrosekund — unit of time equal to 10−6 seconds
  • Ukrainian: мікросеку́нда (mikrosekúnda) — unit of time equal to 10−6 seconds