Answer
This is an official answer by QuranicNames.com Staff
Rayn is not an Islamic name. In the Quran this word refers to the heart becoming corrupt and overcome by sins. Some people use it to refer to Rayyan, and that is acceptable.
As for how to pronounce it, if you use it to refer to Rayyan, then you can pronounce it how you like, since it is a made up word and not a real Arabic word.
