Entry 1 sense Webster, 1913 Codify /kŏdˈ-ĭ-fīˌ/ · Co·di·fy · IPA /ˈkɑd.ɪˌfaɪ/ 01 v. t. To reduce to a code, as laws. imp. & p. p. Codified; p. pr. & vb. n. Codifying 1. To reduce to a code, as laws.