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.
BitLocker provides full-disk encryption, Hyper-V runs virtual machines, and Windows Sandbox creates an isolated space for testing apps. Stackcommerce Team, PC Magazine, 30 Aug. 2026 Walsh’s concern isn’t that ChatGPT has cracked Apple’s end-to-end encryption. Tatiana Sataua, Fortune, 26 Aug. 2026 That was already Ring’s policy, but the new form of encryption reinforces that on a technical level. Clare Duffy, CNN Money, 26 Aug. 2026 The theater’s digital system sat offline for so long that its encryption key expired, meaning the Bruin will need a new digital cinema server. Alison Foreman, IndieWire, 20 Aug. 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

Browse Nearby Words

Cite this Entry

“Encryption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/encryption. Accessed 4 Sep. 2026.

Love words? Need even more definitions?

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

More from Merriam-Webster