From Al-Khwarizmi to Algorithm [Byte-sized Insights] #3 

The word, Khwarizmi is a pure Persian word and It is NOT Arabic. We have the alphabet (خ) in Persian or (Kh). The Persian name consists of Khwar (خور), which means "the sun" and Zm(زم) means "earth" and denotes "the land from which the sun rises", although the same etymology is also given to today's state of Khurasan in Iran as well . Another view is that the Iranian link for "lowland" stands for kh (w) ar "low" and zam "earth, land". Various forms of khwar / khar / khor / hor are also commonly used in the Persian Gulf to stand for watt, marsh, or tidal bay. The narrator of this movie pronounced the alphabet (Kh) very well. Kharizmi was born in greater Persia in 727 AD and at that time the today's new country of Uzbekistan did not exist and people who lived there were mainly Persians so the Turkic people of Uzbekistan did not live in that area at that time. Uzbek people migrated centuries later and the land was part of the greater Persia. Khwarizmi was a Persian Mathematician

Sorry, he wasn't Arab or Persian. He was uzbek from Khwarizm still in Uzbekistan.😊