verb (used with object)

1940–45; en-1 + -crypt (abstracted from cryptic, cryptography, etc.), modeled on encode

encryption, encryptation, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
encrypt (ɪnˈkrɪpt)
1.  to put (a message) into code
2.  to put (computer data) into a coded form
3.  to distort (a television or other signal) so that it cannot be understood without the appropriate decryption equipment
[C20: from en-1 + crypt, as in crypto-]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1975 in computer sense, from en- + crypt (see crypto-). Related: Encrypted; encrypting.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
encrypt   (ěn-krĭpt)  Pronunciation Key 
To alter information using a code or mathematical algorithm so as to be unintelligible to unauthorized readers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

encryption definition

The process of encoding a message so that it can be read only by the sender and the intended recipient. Encryption systems often use two keys, a public key, available to anyone, and a private key that allows only the recipient to decode the message. (See also cryptography.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Computing Dictionary

encryption definition

algorithm, cryptography
Any procedure used in cryptography to convert plaintext into ciphertext (encrypted message) in order to prevent any but the intended recipient from reading that data.
Schematically, there are two classes of encryption primitives: public-key cryptography and private-key cryptography; they are generally used complementarily. Public-key encryption algorithms include RSA; private-key algorithms include the obsolescent Data Encryption Standard, the Advanced Encryption Standard, as well as RC4.
The Unix command crypt performs a weak form of encryption. Stronger encryption programs include Pretty Good Privacy and the GNU Privacy Guard.
Other closely related aspects of cryptograph include message digests.
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
The idea of encryption is to make a message unreadable, except to the receiver.
We use data encryption technology to help protect against loss, misuse or
  alteration of your credit card information.
As long as you don't write your own algorithm, secure encryption is easy.
The research was supposed to be about developing a method for decoding all
  existing encryption codes.
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