Where does “القرن الأفريقي” come from?

القرن الأفريقي (Arabic) comes from Arabic قرن, from Proto-Semitic ḳarn- — horn.

Ancestry of “القرن الأفريقي”, step by step

Step	Language	Word	Meaning
1	Arabic	قرن	horn; century; to join, to couple, to yoke
2	Proto-Semitic	ḳarn-	horn