大だい統とう一いつ理り論ろんMeaningsNoun1. grand unified theoryKanji used大large統overall一one理logic論argumentPitch accentだいとういつりろんComposed of大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix統とう一いつunity; consolidation; uniformity; unification; compatibleNoun理り論ろんtheoryNoun