Dictionary.net

• The author and founder of a new system of religion and civil polity, born at Mecca, in Arabia, A.D. 571.

1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.

• n. The founder of the Mahometan religion, author of the Koran, and first Sultan of the Turkish empire.

1871 - The Cabinet Dictionary of the English Language