de ‧ code /ˌdiːˈkəʊd $ -ˈkoʊd/ BrE AmE verb [transitive]
1 . to discover the meaning of a message written in a ↑ code (=a set of secret signs or letters) SYN decipher
2 . if a computer decodes ↑ data , it receives it and changes it into a form that can be used by the computer or understood by a person OPP encode :
The software decodes the information embedded in the satellite broadcasts.
3 . to receive electronic or ↑ digital signals and change them into a picture and sound for a television or radio OPP encode :
decoding boxes for your TV set
4 . technical to understand the meaning of a word OPP encode