codify UK /ˈkəʊ.dɪˌfaɪ/US /ˈkɑ.dɪˌfaɪ/ verb3 •To reduce to a code, to arrange into a code.The company president codified the goal as a one-line mission statement. •To collect and arrange in a systematic form. •To enact as an official rule or law. formscodified · codifying · codifies