ciphertext

noun

ci·​pher·​text ˈsī-fər-ˌtekst How to pronounce ciphertext (audio)
: the enciphered form of a text or of its elements compare plaintext

Examples of ciphertext in a Sentence

Recent Examples on the Web
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Post-quantum schemes are usually accompanied by larger keys, larger signatures or ciphertext, and sometimes slower verification. Darko Pavic, Forbes.com, 11 May 2026 The researchers estimate that the attack would require about 125 days to decrypt the ciphertext. ArsTechnica, 17 Feb. 2026 Careful scrutiny of the ciphertext can sometimes provide clues, but if all else fails, try all possible lengths. Jack Murtagh, Scientific American, 22 Oct. 2025 Another computational bottleneck entails an operation called bootstrapping, which is needed to periodically remove noise from ciphertexts, Agrawal says. IEEE Spectrum, 23 Sep. 2025

Word History

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of ciphertext was in 1939

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Cite this Entry

“Ciphertext.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ciphertext. Accessed 31 May. 2026.

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