The word "有朝一日" is formed by sequentially combining the characters "有" (meaning 'to have' or 'there is'), "朝" (meaning 'morning' or 'day'), "一" (meaning 'one'), and "日" (meaning 'day'). Literally, "有朝" establishes the existence of a day, and "一日" specifies it as a single day, together creating an idiomatic phrase that expresses "one day" or "someday" in a future context.