רַאֲתָן, (ראת = רתת) [nervous trembling,] a certain skin disease attended with extreme weakness. Gen. R. s. 41, beg. (ref. to Gen. XII, 17) פרעה בר׳ לקה Pharaoh was smitten with raăthan. Ib. כ"ד מיני … אלא ר׳ בלבד there are twenty-four kinds of skin diseases, but there is none for which connection with woman is bad, except raăthan; Y. Keth. VII, end, 31ᵈ.—בעל ר׳ one afflicted with raăthan. Bab. Keth. 77ᵇ; Tosef. ib. VII, 11; a. fr.