code·​book ˈkōd-ˌbu̇k How to pronounce codebook (audio)
: 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 Stan, recognizing the untapped grift potential of the act (and of Pete’s little codebook), arranges for Pete to drink himself to death, then runs away with the act and with a younger performer, Molly (Rooney Mara), who becomes his wife and assistant. Richard Brody, The New Yorker, 17 Dec. 2021 Each codebook requires a separate chip or other piece of hardware. IEEE Spectrum, 27 Jan. 2022 Please always refer to the survey codebook rather than this report document for the exact wording of survey questions and the associated response options. Genny Beemyn, The Conversation, 5 Aug. 2021 Cracking the code Settings that programmed the rotors to substitute new letters changed every 24 hours; each unit had a codebook of daily settings, issued in advance. Kiona N. Smith, Ars Technica, 27 Dec. 2020 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, 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, 7 June 2018 Another interesting featurette documents the creation of the pirate codebook, a ridiculously detailed (and extremely heavy) prop. Lewis Wallace, WIRED, 4 Dec. 2007 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'codebook.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of codebook was in 1866

Dictionary Entries Near codebook

Cite this Entry

“Codebook.” Dictionary, Merriam-Webster, Accessed 3 Oct. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!