The word 制定 is formed by combining two independent characters, each contributing a core meaning that merges into a new, unified concept. The first character, 制 (zhì), carries the sense of "to regulate", "to control", or "to institute". The second, 定 (dìng), means "to set", "to fix", or "to decide". When placed together, their meanings sequentially compound: the act of instituting or regulating (制) results in something being set or finalized (定), thus creating the complete idea of "to formulate", "to draw up", or "to establish" something systematic, like a law or plan.