単たん極きょく性せいうつ病びょうMeaningsNoun1. unipolar depressionKanji used単single極extreme性nature (of a person)病illnessComposed of単たんsingle; simple; singles (tennis, badminton, etc.); win bet (bet which predicts the winner of a race)Prefix極きょく性せいpolarityNounうつ病びょうdepressionNoun