encryption

noun

plural encryptions
1
: the act or process of encrypting something : a conversion of something (such as data) into a code or cipher
The regulations … make it harder to provide automatic encryption of information as it passes through the dozens of links in a typical Internet connection …—Paul Wallich
… a hacker slips into a system, then puts encryption controls in place that locks users out.—Elizabeth Millard
2
: a code or cipher produced by encrypting something
Artificial intelligence can decode encryptions that previously could not be cracked.—Ana Swanson

Examples of encryption in a Sentence

Recent Examples on the Web
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The initiative is part of a broader push to maintain US leadership in a field that could eventually transform encryption, materials science, logistics, and weapons development. — Bojan Stojkovski, Interesting Engineering, 10 Oct. 2026 Cryptography forms the backbone of online encryption, used in web browsers, secure messaging and online banking. — Will Barker, TheWeek, 9 Oct. 2026 With 256-bit AES hardware encryption, your data is protected with a secure password. — George Yang, PC Magazine, 6 Oct. 2026 Sometimes, it’s also sent to the cloud — hopefully with end-to-end encryption — for processing. — Victoria Song, The Verge, 6 Oct. 2026 See All Example Sentences for encryption

Word History

First Known Use

1953, in the meaning defined at sense 1

Time Traveler
The first known use of encryption was in 1953

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Cite this Entry

“Encryption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/encryption. Accessed 14 Oct. 2026.

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