Etymology

nanosecond

N1A1N1O1S1E1C3O1N1D2

Today it means: An SI unit of time equal to 10⁻⁹ seconds. Symbol: ns Full definition →

English second ← Middle English secunde ← Old French seconde
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The story

  1. Ancient Greekνᾶνος (nânos)
  2. Latinnānus
  3. Englishnano-
  4. Old Frenchseconde
  5. Middle Englishsecunde
  6. Englishsecond
  7. English todaynanosecond

From nano- + second.

Etymology from Wiktionary, CC BY-SA 4.0.