副ふく交こう感かん神しん経けい系けいふくこうかんしんけいけいMeanings1nounparasympathetic nervous system; PSNSanatomy›Anatomical term for the part of the autonomic nervous system responsible for rest-and-digest functions.副ふく交こう感かん神しん経けい系けいが優ゆう位