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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The most important thing to look for is whether a password manager offers encryption, which keeps your passwords safe and unreadable to hackers. — Lisa Eadicicco, CNN Money, 26 Oct. 2026 Critically, encryption prevented the report’s authors from determining what the network traffic contained. — Scharon Harding, ArsTechnica, 21 Oct. 2026 For people who frequently encounter login interruptions, a dedicated IP may provide a more consistent browsing experience without giving up VPN encryption. — Kurt Knutsson, FOXNews.com, 20 Oct. 2026 The encryption tool will protect writers from their work being exploited by AI without their consent. — J. Kim Murphy, IndieWire, 20 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 30 Oct. 2026.

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