femtosecond

== English == === Etymology === From femto- +‎ second. === Noun === femtosecond (plural femtoseconds) (metrology) An SI unit of time equal to 10−15 seconds. Symbol: fs Alternative form: fs (symbol) Holonyms: picosecond < nanosecond < 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 2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, "The Werewolf Transformation": Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond. ==== Derived terms ==== ==== Translations ==== === Further reading === “femtosecond”, in OneLook Dictionary Search.