Etymology

picometer

P3I1C3O1M3E1T1E1R1
English meter ← Middle English metere ← Old English metan
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The story

  1. Proto-Celtic*bekkos
  2. Gaulish*bekkosbor.?
  3. Latinbeccus
  4. Old Spanishbico
  5. Spanishpico
  6. Englishpico-
  7. Proto-Indo-European*med-
  8. Proto-Indo-European*médeti
  9. Proto-Germanic*metaną
  10. Proto-West Germanic*metan
  11. Old Englishmetan
  12. Middle Englishmeten
  13. Middle Englishmetere
  14. Englishmeter
  15. English todaypicometer

From pico- + meter.

Etymology from Wiktionary, CC BY-SA 4.0.