greencodingrule
nounUK /ˈɡriːnˌkəʊdɪŋ ruːl/
US /ˈɡriːnˌkoʊdɪŋ ruːl/
A rule that says how to turn secret codes into normal words.
The spy used a greencodingrule to read the hidden message.
OTHER MEANINGS
2. A set of steps for changing coded text back into everyday language.
The greencodingrule told us to swap each letter with the one before it.
3. A guide that helps computers understand secret symbols.
The program followed a greencodingrule to unscramble the file.
4. A shared agreement about how to read hidden signs.
Both friends knew the greencodingrule, so they could pass notes in class.