Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun One quadrillionth (10−15) of a second.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A unit of time equal to 0.000 000 000 000 001 seconds and with symbol fs.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun one quadrillionth (10^-15) of a second; one thousandth of a picosecond

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

femto- + second

Examples

Comments

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  • One quadrillionth of a second.

    February 2, 2007

  • 0,000 000 000 000 001 of a second ("fs").

    May 17, 2008

  • *yawn*

    May 17, 2008