Entry 1 sense Webster, 1913 Universe of discourse /yo͞on'-əv-ẽrsˌ ŭv dĭs'-kôrs/ · U·ni·verse of dis·course · IPA 01 n. everything which may be considered, explicitly or implicitly, in a particular theory or discussion. 1. everything which may be considered, explicitly or implicitly, in a particular theory or discussion.