femtosecond

plural femtoseconds

1. metrologyAn SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs

   Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond

   5 more examples

   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

   Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond.

   2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, "The Werewolf Transformation"

   The observation and manipulation of electron dynamics in matter call for attosecond light pulses, routinely available from high-order harmonic generation driven by few-femtosecond lasers.

   2017, D. E. Rivas, A. Borot, D. E. Cardenas, G. Marcus, X. Gu, D. Herrmann, J. Xu, J. Tan, D. Kormin, G. Ma, W. Dallari, G. D. Tsakiris, I. B. Földes, S.-w. Chou, M. Weidman, B. Bergues, T. Wittmann, H. Schröder, P. Tzallas, D. Charalambidis, O. Razskazovskaya, V. Pervak, F. Krausz, L. Veisz, “Next Generation Driver for Attosecond and Laser-plasma Physics”, in Scientific Reports, volume 7, →DOI

   Hxh son all day any week and any hour any minute any second, any millisecond, any microsecond, any nanosecond any picosecond any femtosecond, any attosecond, any zeptosecond, any yoctosecond, any rontosecond, any quectosecond

   2025 May 23, King Chimera (chimera_4212), X

   sprunker: "ok ill delay the update by 67 years, 67 months, 67 days, 67 hours, 67 seconds, 67 deciseconds, 67 centiseconds, 67 milliseconds, 67 microseconds, 67 nanoseconds, 67 picoseconds, 67 femtoseconds, 67 attoseconds, 67 zeptoseconds, 67 yoctoseconds, 67 rontoseconds, 67 quectoseconds, and 67... plank ^([sic]) time????".

   2025 October 7, baldigaming285, somesillysprunker, “can we all laugh at this guy”, in Reddit, archived from the original on 17 Feb 2026