Etymology

codebook

C3O1D2E1B3O1O1K5

Today it means: A book, table, database, or other object that stores the mapping between plaintext words or phrases and their equivalents in a code. Full definition →

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

  1. Englishcode
  2. Proto-Indo-European*bʰeh₂ǵosder.?
  3. Proto-Indo-European*bʰeh₂g-der.?
  4. Proto-Germanic*bōks
  5. Proto-West Germanic*bōk
  6. Old Englishbōc
  7. Middle Englishbok
  8. Englishbook
  9. English todaycodebook

From code + book.

Etymology from Wiktionary, CC BY-SA 4.0.