理り性せい論ろんMeaningsNoun1. rationalismKanji used理logic性nature (of a person)論argumentPitch accentりせいろんComposed of理り性せいreason; reasoning power; (one's) senseNoun論ろんargument; discussion; dispute; controversy; discourse; debate; theory (e.g. of evolution); doctrine; essay; treatise; …Noun