Sino-:

From Late Latin Sinae ?(“the southern Chinese”), from Ptolemy's Ancient Greek Σ?ναι ?(S?nai, “the southern Chinese”), of uncertain etymology but probably from Sanskrit ??? ?(Cina, “southern China”), possibly via Arabic ???? ?(?īn, “southern China; the southern Chinese”) and usually held to derive from Old Chinese 秦 ?(*Dzin, “Qin”). See "Names of China" at Wikipedia.