<p><strong>Verb</strong></p><ul><li>(used with object) to convert (a message or the like) into cipher or code: "The letter was encrypted before being mailed to protect it from any prying eyes."</li><li>Computers: to change (digital data) into a form that cannot be read without converting it back using a unique key: "The protocol encrypts all of your personal information, including credit card number, name, and address, so that it cannot be stolen."</li></ul>