Where does “طِحَال” come from?

طِحَال (Arabic) comes from Proto-Semitic ṭiḥāl- — spleen, milt.

Ancestry of “طِحَال”, step by step

Step	Language	Word	Meaning
1	Proto-Semitic	ṭiḥāl-	spleen, milt

طِحَال — Etymology, Origin & Word History | Etymology Explorer