パラインフルエンザMeanings1nounparainfluenzaMedical term for a group of viruses causing respiratory infections, especially in children.パラインフルエンザは、特とくに乳にゅう幼よう児じに多おおい呼こ吸きゅう器き感かん染せん症しょうです。Parainfluenza is a respiratory infection common especially in infants and young children.