Etymology

petabit

P3E1T1A1B3I1T1

Today it means: One quadrillion (10¹⁵, or 1,000,000,000,000,000) bits or 1,000 terabits. Full definition →

English bit ← Middle English digit ← Latin digitus
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The story

  1. Englishpeta-
  2. Proto-Indo-European*dwóh₁
  3. Proto-Indo-European*trísinflu.
  4. Proto-Indo-European*dwís
  5. Proto-Italic*dwis
  6. Proto-Italic*dwiznos
  7. Latinbīnus
  8. Late Latinbīnāriu
  9. Middle Englishbinarie
  10. Englishbinary
  11. Proto-Indo-European*deyḱ-der.?
  12. Latindigitus
  13. Middle Englishdigit
  14. Englishdigit
  15. Englishbinary digitabbr.
  16. Englishbitinflu.
  17. Englishbit
  18. English todaypetabit

From peta- + bit.

Etymology from Wiktionary, CC BY-SA 4.0.