枯こ草そう熱ねつこそうねつMeanings1nounhay fever; pollinosisobsolete termObsolete medical term for hay fever or pollen allergy. Replaced by 花粉症 (かふんしょう) in modern usage.See also: 花粉症昔むかしは枯こ草そう熱ねつと呼よばれていたが、今いまは花か粉ふん症しょうという。It used to be called 枯草熱, but now it is called 花粉症.