Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: en- + crypt- (as in cryptogram)

encrypt

 verb
     
Related topics: Computers
en‧crypt [transitive]
TD to protect information by putting it into a special code that only some people can read, especially information that is on a computer [↪ decrypt]
—encryption noun [uncountable]
secure encryption of data
—encrypted adjective:
files stored in encrypted form
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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