Usually means: Femtosecond, one quadrillionth of a second.
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We found 4 dictionaries that define the word fsec:

General (3 matching dictionaries)
  1. fsec: Wiktionary
  2. FSEC: Dictionary.com
  3. FSEC: Stammtisch Beau Fleuve Acronyms

Miscellaneous (1 matching dictionary)
  1. FSEC: Acronym Finder

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Definitions from Wiktionary (Fsec)

▸ noun:  Abbreviation of femtosecond. [(metrology) An SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs]

Similar:
msec, Sec., cm/sec, arcsec, secs., secs, exsec, fem., sqft, sq ft, more...

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Similar:
msec, Sec., cm/sec, arcsec, secs., secs, exsec, fem., sqft, sq ft, more...



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