nanosecond

noun

Etymology: Etymology tree Ancient Greek νᾶνος (nânos)bor. Latin nānusbor. English nano- English second English nanosecond From nano- + second.

1. An SI unit of time equal to 10⁻⁹ seconds. Symbol: ns

   “Holonyms: microsecond < 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”

2. An extremely short period of time; an instant.

   “I just know that the nanosecond I take my eyes off my phone, somebody's going to steal it.”