code·​book | \ ˈkōd-ˌbu̇k How to pronounce codebook (audio) \

Definition of codebook

: a book containing an alphabetical list of words or expressions with their code equivalents

Examples of codebook in a Sentence

Recent Examples on the Web

The error involved the NKVD’s codebooks, known as one-time pads, which used random numbers to scramble letters, words and phrases. Tim Folger, Discover Magazine, "Chance Encounters," 17 Aug. 2018 White privilege is like an invisible weightless backpack of special provisions, maps, passports, codebooks, visas, clothes, tools and blank checks. Michael Harriot, The Root, "A Thank-You Letter to Kim Kardashian for Proving White Privilege Is Real," 7 June 2018 Another interesting featurette documents the creation of the pirate codebook, a ridiculously detailed (and extremely heavy) prop. Lewis Wallace, WIRED, "Pirates‘ Massive Maelstrom Makes the DVD," 4 Dec. 2007

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'codebook.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of codebook

1866, in the meaning defined above

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Dictionary Entries near codebook

Coddington lens





code clerk


Statistics for codebook

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Time Traveler for codebook

The first known use of codebook was in 1866

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More from Merriam-Webster on codebook

Rhyming Dictionary: Words that rhyme with codebook

Comments on codebook

What made you want to look up codebook? Please tell us where you read or heard it (including the quote, if possible).


appealing forcibly to the mind or reason

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