Etymology

femtofarad

F4E1M3T1O1F4A1R1A1D2

Today it means: An SI unit of electrical capacitance equal to 10⁻¹⁵ farads. Symbol: fF Full definition →

English farad ← Danish femten ← Old Norse fimmtán
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The story

  1. Proto-Indo-European*pénkʷe
  2. Proto-Germanic*fimf
  3. Proto-Indo-European*déḱm̥
  4. Proto-Germanic*tehun
  5. Proto-Germanic*fimftehun
  6. Old Norsefimmtán
  7. Danishfemten
  8. Englishfemto-
  9. Englishfarad
  10. English todayfemtofarad

From femto- + farad.

Etymology from Wiktionary, CC BY-SA 4.0.