: a set of laws or regulations
: a set of ideas or rules about how to behave
: a set of letters, numbers, symbols, etc., that is used to secretly send messages to someone
: to put (a message) into the form of a code so that it can be kept secret
: to mark (something) with a code so that it can be identified
: to change (information) into a set of letters, numbers, or symbols that can be read by a computer
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