Etymology

kilometer

K5I1L1O1M3E1T1E1R1
English meter ← Middle English metere ← Old English metan
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The story

  1. Englishkilo-
  2. Proto-Indo-European*med-
  3. Proto-Indo-European*médeti
  4. Proto-Germanic*metaną
  5. Proto-West Germanic*metan
  6. Old Englishmetan
  7. Middle Englishmeten
  8. Middle Englishmetere
  9. Englishmeter
  10. English todaykilometer

From kilo- + meter.

Etymology from Wiktionary, CC BY-SA 4.0.