Usually means: Extremely tiny unit of mass.
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We found 4 dictionaries that define the word femtogram:

General (2 matching dictionaries)
  1. femtogram: Wiktionary
  2. Femtogram: Wikipedia, the Free Encyclopedia

Computing (1 matching dictionary)
  1. Femtogram: Encyclopedia

Medicine (1 matching dictionary)
  1. Femtogram: Medical dictionary

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Definitions from Wiktionary (femtogram)

▸ noun:  (metrology) An SI unit of mass equal to 10⁻¹⁵ grams. Symbol: fg

Similar:
femtogramme, femtosecond, femtometer, femtofarad, femtometre, femtocoulomb, femtomole, fsec, fmol, fermi, more...

Opposite:
gigagram, megagram, kilogram, gram, milligram

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Similar:
femtogramme, femtosecond, femtometer, femtofarad, femtometre, femtocoulomb, femtomole, fsec, fmol, fermi, more...

Opposite:
gigagram, megagram, kilogram, gram, milligram



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