出典:Wiktionary
From Middle English catarre, from Medieval Latin catarrus, from Late Latin catarrhus, from Ancient Greek κατάρροος (katárrhoos), which is derived from καταρρέω (katarrhéō, “I flow down”), which is composed of κατά (katá, “down”) and ῥέω (rhéō, “I flow”).
catarrh (countable かつ uncountable, 複数形 catarrhs)