Etymology

logbook

log·book
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Today it means: A book in which measurements of a ship's position are recorded, along with other salient details of the voyage, such as weather, resupply occasions, the crew's performance, other ships sighted, and so on. Full definition →

English book ← Middle English bok ← Old English bōc
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The story

  1. Proto-Indo-European*legʰ-
  2. Proto-Indo-European*légʰyeti
  3. Proto-Germanic*ligjaną
  4. Old Norseliggjader.?
  5. Middle Englishlogge
  6. Englishlog
  7. Proto-Indo-European*bʰeh₂ǵosder.?
  8. Proto-Indo-European*bʰeh₂g-der.?
  9. Proto-Germanic*bōks
  10. Proto-West Germanic*bōk
  11. Old Englishbōc
  12. Middle Englishbok
  13. Englishbook
  14. English todaylogbook

Compound of log + book, originally a record of a ship’s speed and progress, from a wooden float (chip log, or simply log) used to measure speed. First attested in the 1670s.

Etymology from Wiktionary, CC BY-SA 4.0.